Hob fixed transmission gear machining device

Abstract

The invention belongs to the technical field of gear machining, and particularly relates to a hob positioning type transmission gear machining device which comprises a base, a supporting frame is arranged on the base and connected with a limiting disc, and the limiting disc is connected with a tool rest. The cutting assembly comprises a sliding frame, and the sliding frame is connected with a hobbing cutter; the fixing assembly comprises a placing disc, a gear is placed on the placing disc, and a limiting block is connected to the placing disc; the limiting assembly comprises a first lifting plate, the first lifting plate is sleeved with a lifting rod, the lifting rod is connected with a second lifting plate, the first lifting plate is hinged to a first folding plate, and the first folding plate is hinged to a second folding plate. The inclination angle of the hobbing cutter can be adjusted according to the cutting parameter requirement before use, hobbing cutters of different types and lengths can be installed, the multi-adaptability of the device is achieved, gears of different types and sizes can be fixed, and the situation that the cutting effect is affected due to the fact that the gears slip in the cutting process is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of gear processing, and particularly relates to a gear processing device with a fixed hob drive. Background Art

[0002] Hobbing is the core process of gear manufacturing, and its accuracy and efficiency directly affect the meshing performance and transmission efficiency of the gear pair. Traditional hobbing equipment has significant technical defects in hob adaptability, processing flexibility, and gear size compatibility, resulting in high changeover costs and poor accuracy consistency during the production of multi-variety gears. For example, in Chinese application CN119407562A, a gear groove positioning cutting device for preventing deviation is disclosed, which can adjust the reciprocating movement distance of the gear hob by relying on an adjustable reciprocating component, and thus is more suitable for processing gear blanks of different thicknesses.

[0003] Firstly, the diversity of gear module and tooth profile (involute, cycloid, circular arc) requires frequent replacement of hob models. The hob spindle of the above patent is fixed, making it difficult to replace different types of hobs and gears. Moreover, although the above patent can limit and fix the gear blank by relying on the positioning mechanism, during the use process, the gear needs to rotate during the hob cutting process, and it is inevitable that slipping and other phenomena will occur only relying on the limit of support and clamping, affecting the cutting stability.

[0004] Secondly, for helical gear processing, the installation angle of the hob needs to be precisely controlled, and it needs to 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 meet the processing requirements of different types and sizes of gears, affecting the practicability. Summary of the Invention

[0005] The purpose of the present invention is to provide a gear processing device with a fixed hob drive, which can adjust the inclination angle of the hob according to the cutting parameter requirements before use, install hobs of different models and lengths, realize the multi-adaptability of the device, and can also fix gears of different models and sizes, and avoid slipping of the gear during cutting, affecting the cutting effect.

[0006] The technical solution adopted by the present invention is specifically as follows: A gear processing device with a fixed hob drive, comprising: A base, on the upper end of which a support frame is slidably connected. One side of the support frame is fixedly connected with a limit disc, and a tool holder is rotatably connected to the middle of the limit disc; A cutting assembly, which includes a sliding frame slidably connected to the inner cavity of the tool holder, and a hob is rotatably connected to the inner cavity of the sliding frame; A fixing assembly, which includes a placing disc arranged above the base, a gear is placed on the placing disc, and a plurality of limit blocks are slidably connected to the inner cavity of the placing disc, and the outer circles of the plurality of limit blocks are movably sleeved in the inner cavity of the gear; The limiting component includes a first lifting plate. A lifting rod is movably sleeved in the inner cavity of the first lifting plate. The lower end of the lifting rod is fixedly connected to a second lifting plate. The outer ring of the first lifting plate is hinged with a first folding plate. The lower end of the first folding plate is hinged with a second folding plate. The lower end of the second folding plate is hinged to the outer ring of the second lifting plate. Among them, the sliding frame slides along the tool rest to adjust the internal width of the tool rest, and the tool rest rotates along the limiting disc to adjust the inclination angle of the hob. When the gear is placed on the placing disc, an appropriate amount of limiting blocks protrude to limit the gear. The second lifting plate rises, driving the second folding plate and the first folding plate to fold, and limiting the upper end of the gear.

[0007] In a preferred solution, a hollow tube is fixedly connected to the upper end of the base, and the lower end of the support frame is movably sleeved in the hollow tube. An electric push rod one is fixedly installed at the lower end of the inner cavity of the base, and the upper end of the electric push rod one is fixedly connected to the lower end of the support frame.

[0008] In a preferred solution, two groups of positioning plates are fixedly connected to one side of the tool rest close to the limiting disc. Both groups of positioning plates are slidably connected in the inner cavity of the limiting disc, and one end of both groups of positioning plates close to the support frame penetrates through the limiting disc and is located outside the limiting disc. A plurality of groups of positioning grooves are provided on the surface of the limiting disc close to the support frame. The parts of both groups of positioning plates extending out of the limiting disc are attached to the outside of the positioning grooves, and positioning rods are movably inserted into the parts of the positioning plates located outside the positioning grooves. One end of the positioning rod close to the tool rest is inserted into the inner cavity of the positioning groove. An electric motor one is fixedly installed in the inner cavity of the support frame, and the output shaft of the electric motor one penetrates through the support frame and the limiting disc and is fixedly connected to the rotating shaft of the tool rest.

[0009] In a preferred solution, the cutting component further includes a first lead screw. The first lead screw is rotatably connected in the inner cavity of the tool rest, and the middle outer ring of the first lead screw is threadedly connected to the middle part of the sliding frame.

[0010] In a preferred solution, a dismounting block is fixedly connected to the lower end of the sliding frame. The rotating shafts at both ends of the hob are respectively rotatably connected in the inner cavities of the sliding frame, the dismounting block, and the inner cavity of the tool rest. An electric motor two is fixedly installed at one end of the tool rest away from the sliding frame. A driving sleeve is fixedly connected to the output shaft of the electric motor two, and the inner ring of the driving sleeve is movably inserted on the rotating shaft of the hob.

[0011] In a preferred solution, the fixing component further includes a moving rod. The moving rod is slidably connected to the middle part of the upper end of the base. Limiting strips are fixedly installed on both the front and rear sides of the upper end of the base. Both the front and rear ends of the moving rod are in contact connection with the mutually approaching sides of the two groups of limiting strips. An electric push rod two is fixedly installed in the middle part of the inner cavity of the base, and the output end of the electric push rod two is fixedly connected to the lower end of the moving rod.

[0012] In a preferred embodiment, the fixing component further includes a third motor, which is installed at the lower end of the moving rod. A rotating rod is fixedly connected to the output shaft of the third motor. The rotating rod is rotatably connected to the inner cavity of the moving rod through a ball bearing. The upper end of the rotating rod penetrates through the moving rod. The middle part of the lower end of the placing disc is fixedly connected to the upper end of the part of the rotating rod extending out of the moving rod. A plurality of groups of grooves are formed in the upper end of the placing disc. A plurality of groups of limiting blocks are respectively slidably connected in the plurality of groups of grooves. Springs are fixedly connected to the lower ends of the limiting blocks, and the lower ends of the springs are fixedly connected to the lower ends of the inner cavities of the grooves.

[0013] In a preferred embodiment, there are multiple groups of limiting blocks, namely four groups of strip-shaped blocks and four groups of arc-shaped blocks. Among them, the strip-shaped blocks correspond to the shaft holes of the gears, and the arc-shaped blocks are symmetrically distributed on both sides of the upper end of the placing disc, and the arc-shaped blocks correspond to the circular holes of the gears.

[0014] In a preferred embodiment, the limiting component further includes a cross-shaped pipe, which is fixedly installed in the middle of the upper end of the placing disc. A second screw rod is threadedly connected to the middle of the upper end of the cross-shaped pipe. The lower end of the second screw rod extends into the inner cavity of the cross-shaped pipe. The middle part of the upper end of the lifting plate one is rotatably connected to the lower end of the second screw rod.

[0015] In a preferred embodiment, the lifting rod is movably sleeved in the inner cavity of the second screw rod. The lower end of the lifting rod penetrates through the second screw rod and the lifting plate one and is fixedly connected to the lifting plate two. Both the folding plate one and the folding plate two are slidably connected in the grooves of the cross-shaped pipe.

[0016] The technical effects achieved by the present invention are as follows: The limiting disc and the tool rest of the present invention can adjust the inclination angle of the hob according to the cutting parameter requirements before use, so as to cope with different cutting scenarios and requirements; before cutting, drive the tool rest to rotate along the center of the limiting disc, and after rotating to the appropriate angle, insert the positioning part of the tool rest into the fixed part of the limiting disc to fix the tool rest, so as to realize the adjustment of the inclination angle of the tool rest and the hob to meet different cutting parameter requirements; The cutting component of the present invention can realize the convenient disassembly of the hob and the installation of hobs of different models and lengths, realizing the multi-adaptability of the device; before gear cutting operation, rotate the driving part of the cutting component to drive the sliding frame to move, and then adjust the distance between the sliding frame and the tool rest. Immediately remove the blocking parts of the sliding frame and the tool rest, install the hob into the inner cavities of the sliding frame and the tool rest, and connect it to the driving part of the cutting component, so that the driving part can drive the hob to rotate for cutting operation, realizing the installation of hobs of different length dimensions and improving the applicability of the device; The fixing component and the limiting component of the present invention can fix gears of different models and sizes, and prevent the gears from slipping during cutting, which affects the cutting effect. During cutting, the gear is placed on the placement plate. At this time, the gear will squeeze the limiting blocks with different thickness parameters into the placement plate, and the remaining limiting blocks will fit into the shaft hole of the gear for limiting. Subsequently, the folding part of the limiting component is pulled up, so that the folding part of the limiting component protrudes outward. Then, the driving part of the limiting component is rotated, so that the protruding folding part descends and fits on the upper end of the gear for fixing. After the gear is fixed, the driving part of the fixing component drives the placement plate and the gear to rotate for cutting operations. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the sectional schematic diagram of the base of the present invention; Figure 3 is the sectional schematic diagram of the support frame of the present invention; Figure 4 is the structural schematic diagram of the tool rest of the present invention; Figure 5 is the structural schematic diagram of the limiting plate of the present invention; Figure 6 is the exploded schematic diagram of the cutting component of the present invention; Figure 7 is the structural schematic diagram of the fixing component of the present invention; Figure 8 is the sectional schematic diagram of the moving rod of the present invention; Figure 9 is the position schematic diagram of the gear and the limiting block of the present invention; Figure 10 is the sectional schematic diagram of the placement plate of the present invention; Figure 11 is the position schematic diagram of the limiting component of the present invention; Figure 12 is the sectional schematic diagram of the cross tube of the present invention; Figure 13 is the sectional schematic diagram of the second lead screw of the present invention; Figure 14 is the structural schematic diagram of the second folding plate of the present invention.

[0018] In the drawings, the list of components represented by each reference numeral is as follows: 10. Base; 11. Hollow tube; 12. Support frame; 13. Electric push rod 1; 14. Limit disc; 15. Tool holder; 16. Positioning plate; 17. Positioning groove; 18. Positioning rod; 19. Motor 1; 20. Cutting assembly; 21. Sliding frame; 22. Lead screw 1; 23. Demounting block; 24. Hob; 25. Motor 2; 26. Driving sleeve; 30. Fixing assembly; 31. Moving rod; 32. Limit strip; 33. Electric push rod 2; 34. Placing disc; 35. Motor 3; 36. Rotating rod; 37. Gear; 38. Limit block; 39. Spring; 40. Limiting assembly; 41. Cross tube; 42. Lead screw 2; 43. Lifting plate 1; 44. Lifting rod; 45. Lifting plate 2; 46. Folding plate 1; 47. Folding plate 2. Detailed implementation manners

[0019] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0020] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0021] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive of other embodiments.

[0022] Furthermore, the present invention is described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structures will be enlarged locally out of the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0023] Please refer to the attached Figures 1 to 4 , Figures 8 to 10 and Figure 13 As shown, this embodiment provides a hob fixed-form transmission gear processing device, including: A base 10, on the upper end of the base 10 is slidably connected a support frame 12. On one side of the support frame 12 is fixedly connected a limit disc 14, and in the middle of the limit disc 14 is rotatably connected a tool holder 15; A cutting assembly 20, the cutting assembly 20 includes a sliding frame 21, the sliding frame 21 is slidably connected in the inner cavity of the tool holder 15, and in the inner cavity of the sliding frame 21 is rotatably connected a hob 24; Fixing component 30, the fixing component 30 includes a placement plate 34, the placement plate 34 is arranged above the base 10, a gear 37 is placed on the placement plate 34, a plurality of limiting blocks 38 are slidably connected to the inner cavity of the placement plate 34, and the outer rings of the plurality of limiting blocks 38 are movably sleeved in the inner cavity of the gear 37; Limiting component 40, the limiting component 40 includes a first lifting plate 43, a lifting rod 44 is movably sleeved in the inner cavity of the first lifting plate 43, the lower end of the lifting rod 44 is fixedly connected to a second lifting plate 45, the outer ring of the first lifting plate 43 is hinged to a first folding plate 46, the lower end of the first folding plate 46 is hinged to a second folding plate 47, and the lower end of the second folding plate 47 is hinged to the outer ring of the second lifting plate 45; Wherein, the sliding frame 21 slides along the tool rest 15 to adjust the inner width of the tool rest 15, and the tool rest 15 rotates along the limiting disk 14 to adjust the inclination angle of the hob 24; When the gear 37 is placed on the placement plate 34, an appropriate amount of limiting blocks 38 protrude to limit the gear 37, the second lifting plate 45 rises, driving the second folding plate 47 and the first folding plate 46 to fold, and limiting the upper end of the gear 37.

[0024] It should be noted that both the first lifting plate 43 and the second lifting plate 45 are circular plates, and four groups of grooves are provided on the outer rings, and both the first folding plate 46 and the second folding plate 47 are hinged in the grooves.

[0025] In this embodiment, before cutting, the cutting component 20 adjusts the position of the sliding frame 21, thereby regulating the distance between the sliding frame 21 and the tool rest 15. Subsequently, the hob 24 is installed in the tool rest 15 and the sliding frame 21. Then, the tool rest 15 is driven to rotate on the limiting disk 14 to adjust the inclination angles of the tool rest 15 and the hob 24. Then, the gear 37 is placed on the placement plate 34, and the shaft hole of the gear 37 is limited and fixed by the limiting blocks 38. Then, the lifting rod 44 is pulled up to fold the second folding plate 47 and the first folding plate 46. Then, the folded second folding plate 47 and the first folding plate 46 are driven to descend to fix the upper end of the gear 37. Subsequently, the fixing component 30 drives the gear 37 to approach the hob 24 and drives the gear 37 to rotate to contact the hob 24 for cutting operation.

[0026] Secondly, please refer to again Figures 1 to 5 , the upper end of the base 10 is fixedly connected with a 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 a first electric push rod 13, and the upper end of the first electric push rod 13 is fixedly connected to the lower end of the support frame 12; On one side of the tool rest 15 close to the limit disc 14, two groups of positioning plates 16 are fixedly connected. Both groups of positioning plates 16 are slidably connected to the inner cavity of the limit disc 14, and one end of both groups of positioning plates 16 close to the support frame 12 penetrates through the limit disc 14 and is located outside the limit disc 14. On the side of the limit disc 14 close to the support frame 12, a plurality of groups of positioning grooves 17 are provided. The parts of both groups of positioning plates 16 extending out of the limit disc 14 are attached to the outside of the positioning grooves 17, and a positioning rod 18 is movably inserted into the part of the positioning plate 16 located outside the positioning groove 17. One end of the positioning rod 18 close to the tool rest 15 is inserted into the inner cavity of the positioning groove 17. A first motor 19 is fixedly installed in the inner cavity of the support frame 12, and the output shaft of the first motor 19 penetrates through the support frame 12 and the limit disc 14 and is fixedly connected to the rotating shaft of the tool rest 15.

[0027] It should be noted that two through grooves are provided in the inner cavity of the limit disc 14, and both groups of positioning plates 16 are slidably connected to the inner cavity of the through grooves. The inner diameter moving space of the through grooves is adapted to the empty space distance of the positioning grooves 17, aiming to prevent the positioning plates 16 from not being able to fit with the inner cavity wall of the limit disc 14 when connecting to the two hole positions at the upper and lower ends of the positioning grooves 17, which affects the stability. 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 first motor 19. Each group of positioning grooves 17 has three hole positions, and the arc of the hole position distance at the upper and lower ends should be less than 3°. Aiming to limit the inclination angle of the tool rest 15 when the positioning plate 16 is connected to the positioning grooves 17 at different positions through the positioning rod 18, and further limit the inclination angle of the hob 24, so as to facilitate the adaptation to hobs 24 of different models.

[0028] In this embodiment, during use, the first motor 19 drives the tool rest 15 to rotate around the center of the limit disc 14. When it rotates to the appropriate angle, the first motor 19 is stopped. Then, the positioning plate 16 is aligned with the positioning groove 17, and the positioning rod 18 is inserted through the positioning plate 16 and into the inner cavity of the positioning groove 17, thereby fixing the tool rest 15, and further realizing the adjustment of the inclination angles of the tool rest 15 and the hob 24. During the cutting operation, the first electric push rod 13 drives the support frame 12 to descend, driving the hob 24 to descend and approach the gear 37 for cutting operation.

[0029] Secondly, please refer to again Figures 4 to 6 The cutting assembly 20 further includes a first lead screw 22. The first lead screw 22 is rotatably connected to the inner cavity of the tool rest 15 through a ball bearing, and the outer ring of the middle section of the first lead screw 22 is threadedly connected to the middle part of the sliding frame 21. The lower end of the sliding carriage 21 is fixedly connected with a dismounting block 23 by bolts. The rotating shafts at both ends of the hob 24 are respectively rotatably connected to the inner cavities of the sliding carriage 21 and the dismounting block 23, and the inner cavity of the tool rest 15. A second motor 25 is fixedly installed at one end of the tool rest 15 away from the sliding carriage 21. A driving sleeve 26 is fixedly connected to the output shaft of the second motor 25. The inner ring of the driving sleeve 26 is movably inserted into the rotating shaft of the hob 24.

[0030] It should be noted that a holding handle is fixedly connected to the outer end of the first lead screw 22, which is intended to facilitate driving the first lead screw 22 to rotate. The tool rest 15 is provided with the same structure as the sliding carriage 21 and the dismounting block 23, which is intended to fix the hob 24 by using the tool rest 15 and the sliding carriage 21. At the same time, by using the lower dismounting block 23, when the hob 24 presses down for cutting operations, the dismounting block 23 will not bear pressure, avoiding the detachment of the dismounting block 23 and affecting stability. The inner cavity of the driving 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, which is intended to enable the hob 24 to be quickly removed from the driving sleeve 26 and also be driven to rotate by the driving sleeve 26.

[0031] In this embodiment, before use, the dismounting block 23 is removed. Then, the first lead screw 22 is rotated to drive the sliding carriage 21 to slide in the inner cavity of the tool rest 15, and the distance between the sliding carriage 21 and the tool rest 15 is adjusted. Then, both ends of the hob 24 are respectively connected to the inner cavities of the sliding carriage 21 and the tool rest 15, and the rotating shaft of the hob 24 is inserted into the driving sleeve 26. Immediately afterwards, the dismounting block 23 is fixed to the lower ends of the sliding carriage 21 and the tool rest 15 to fix the hob 24. During the cutting operation, the second motor 25 drives the driving sleeve 26 to rotate, driving the hob 24 to rotate together for cutting.

[0032] Secondly, please refer to Figures 7 to 11 again. The fixing assembly 30 further includes a moving rod 31. The moving rod 31 is slidably connected to the middle of the upper end of the base 10. Limiting strips 32 are fixedly installed on both the front and rear sides of the upper end of the base 10. Both the front and rear ends of the moving rod 31 are in contact connection with the mutually approaching sides of the two limiting strips 32. An electric push rod two 33 is fixedly installed in the middle of the inner cavity of the base 10. The output end of the electric push rod two 33 is fixedly connected to the lower end of the moving rod 31. The fixing component 30 further includes a third motor 35. The third motor 35 is installed at the lower end of the moving rod 31, and a rotating rod 36 is fixedly connected to the output shaft of the third 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 penetrates through the moving rod 31. The middle part of the lower end of the placing disc 34 is fixedly connected to the upper end of the part of the rotating rod 36 extending out of the moving rod 31. A plurality of grooves are formed in the upper end of the placing disc 34. A plurality of limiting blocks 38 are respectively slidably connected in the plurality of grooves, and springs 39 are fixedly connected to the lower ends of the limiting blocks 38. The lower ends of the springs 39 are fixedly connected to the lower ends of the inner cavities of the grooves; There are a plurality of limiting blocks 38, which are respectively four strip-shaped blocks and four arc-shaped blocks. Among them, the strip-shaped blocks correspond to the shaft holes of the gear 37, and the arc-shaped blocks are symmetrically distributed on both sides of the upper end of the placing disc 34, and the arc-shaped blocks correspond to the circular holes of the gear 37.

[0033] It should be noted that a protective shell is provided on the outer edge of the third motor 35, and the protective shell is fixedly installed at the lower end of the moving rod 31, aiming to enable the third motor 35 to move together with the moving rod 31; A plurality of partition plates are fixedly connected to the inner cavity of the upper end of the placing disc 34. The plurality of limiting blocks 38 and springs 39 are separated by the partition plates. Grooves adapted to the thickness of the partition plates are formed between adjacent limiting blocks 38, aiming to enable adjacent limiting blocks 38 to fit together to improve strength and also be isolated by the partition plates to prevent adjacent springs 39 from being entangled and affecting use; A spring 39 is also fixedly connected below the arc-shaped limiting block 38, and protrusions are provided at both ends of the limiting block 38. The protrusions are slidably connected to the inner cavity of the placing disc 34, aiming to limit the movement range of the limiting block 38 and prevent the limiting block 38 from directly protruding and affecting use.

[0034] Preferably, to ensure adaptation to different models of gears 37, a plurality of limiting blocks 38 should be provided, and their thickness data should be set as the specific inner diameter data of the gears 37 that are commonly processed. Aiming to enable different models of gears 37 to press the limiting blocks 38 with inadaptable inner diameter widths into the inner cavity of the placing disc 34 when sleeved above the placing disc 34, and enable the remaining protruding limiting blocks 38 to fit in the inner cavity of the gear 37 to ensure the stability during the processing of the gear 37.

[0035] Preferably, to ensure the normal operation of the device, the device should be externally connected to a control unit to control the rotation speeds of the hob 24 and the placing disc 34, so that the hob 24 and the gear 37 can perform cutting under appropriate rotation speed conditions to avoid affecting the yield rate of the gear 37.

[0036] In this embodiment, before the cutting operation, the gear 37 is placed on the placement plate 34. At this time, the pressed gear 37 will press the limit block 38 that does not match the inner diameter width of the gear 37 into the inner cavity of the placement plate 34, while the matching limit block 38 extends under the elastic force of the spring 39 to limit the inner cavity of the gear 37. During the cutting operation, the third motor 35 drives the rotating rod 36 and the placement plate 34 to rotate, driving the gear 37 to rotate together for the cutting operation. At the same time, the second electric push rod 33 will drive the moving rod 31 to move, driving the placement plate 34 and the gear 37 closer to the hob 24 for cutting.

[0037] Please refer to again Figures 11 to 14 , the limit component 40 further includes a cross tube 41. The cross tube 41 is fixedly installed in the middle of the upper end of the placement plate 34. A second lead screw 42 is threadedly connected to the middle of the upper end of the cross tube 41. The lower end of the second lead screw 42 extends into the inner cavity of the cross tube 41, and the middle of the upper end of the first lifting plate 43 is rotatably connected to the lower end of the second lead screw 42 through a ball bearing; The lifting rod 44 is movably sleeved in the inner cavity of the second lead screw 42, and the lower end of the lifting rod 44 penetrates through the second lead screw 42 and the first lifting plate 43 and is fixedly connected to the second lifting plate 45. The first folding plate 46 and the second folding plate 47 are both slidably connected in the groove of the cross tube 41.

[0038] It should be noted that a non-slip pad is fixedly connected to the part of the lower end of the second folding plate 47 in contact with the gear 37, aiming to improve the stability of the upper limit of the gear 37; Four groups of strip-shaped through grooves are opened on the outer surface of the cross tube 41, and the width of the through grooves is adapted to the widths of the first folding plate 46 and the second folding plate 47. The first folding plate 46 and the second folding plate 47 are both slidably connected in the strip-shaped through grooves, aiming to use the first folding plate 46 and the second folding plate 47 to limit the movement range of the two lifting plates, so as to prevent the two lifting plates from rotating simultaneously when the second lead screw 42 rotates, affecting the use; Grip handles are fixedly connected to the upper ends of the second lead screw 42 and the lifting rod 44, aiming to facilitate the control of the rotation of the second lead screw 42 and the lifting of the lifting rod 44.

[0039] In this embodiment, when the gear 37 is placed on the placement plate 34, pull up the lifting rod 44 to raise the second lifting plate 45, drive the second folding plate 47 and the first folding plate 46 to fold in half. Then rotate the second lead screw 42 to lower the first lifting plate 43, as well as the second folding plate 47 and the first folding plate 46, to limit the upper end of the gear 37. At the same time, the folded second folding plate 47 and the first folding plate 46 will form a cone shape, so that the gear 37 can be aligned with the center of the placement plate 34 during the pressing process. At the same time, the pressed second folding plate 47 and the first folding plate 46 will push the gear 37 to press the limit block 38 with a non-matching inner diameter into the placement plate 34 to limit and fix the gear 37.

[0040] The working principle of the present invention is as follows: Before use, remove the disassembly block 23, then rotate the first lead screw 22 to adjust the distance between the sliding frame 21 and the tool rest 15. Connect both ends of the hob 24 to the inner cavities of the sliding frame 21 and the tool rest 15, and insert the rotating shaft of the hob 24 into the driving sleeve 26. Immediately fix the disassembly block 23 at the lower ends of the sliding frame 21 and the tool rest 15 to fix the hob 24. Subsequently, the first motor 19 drives the tool rest 15 to rotate. When it rotates to an appropriate angle, align the positioning plate 16 with the positioning groove 17, and insert the positioning rod 18 through the positioning plate 16 and into the inner cavity of the positioning groove 17 to achieve the adjustment of the inclination angle of the tool rest 15 and the hob 24. Then place the gear 37 on the placing disc 34, pull up the lifting rod 44 to raise the second lifting plate 45, drive the second folding plate 47 and the first folding plate 46 to fold. Subsequently, rotate the second lead screw 42 to lower the first lifting plate 43, as well as the second folding plate 47 and the first folding plate 46, limit the upper end of the gear 37 and squeeze the gear 37 downward, press the limiting block 38 that does not match the inner diameter of the gear 37 into the placing disc 34, and the matching limiting block 38 extends under the elastic force of the spring 39 to limit the inner cavity of the gear 37. After the preparatory work is completed, the third motor 35 drives the rotating rod 36 and the placing disc 34 to rotate, driving the gear 37 to rotate together for cutting operations. At the same time, the second electric push rod 33 drives the moving rod 31 to move, driving the placing disc 34 and the gear 37 to approach the hob 24, and the first electric push rod 13 drives the support frame 12 to lower, driving the hob 24 to lower and approach the gear 37. At the same time, the second 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 process of the gear 37.

[0041] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A hob fixed transmission gear processing device, characterized in that: Including: A base, on the upper end of the base is slidably connected a support frame, on one side of the support frame is fixedly connected a limit disk, and in the middle of the limit disk is rotatably connected a tool holder; A cutting assembly, the cutting assembly includes a sliding frame, the sliding frame is slidably connected in the inner cavity of the tool holder, and in the inner cavity of the sliding frame is rotatably connected a hob; A fixing assembly, the fixing assembly includes a placing disk, the placing disk is arranged above the base, on the placing disk is placed a gear, in the inner cavity of the placing disk is slidably connected multiple groups of limiting blocks, and the outer circles of the multiple groups of limiting blocks are movably sleeved in the inner cavity of the gear; A limiting assembly, the limiting assembly includes a first lifting plate, in the inner cavity of the first lifting plate is movably sleeved a lifting rod, the lower end of the lifting rod is fixedly connected with a second lifting plate, the outer circle of the first lifting plate is hinged with a first folding plate, the lower end of the first folding plate is hinged with a second folding plate, and the lower end of the second folding plate is hinged on the outer circle of the second lifting plate; Wherein, 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 disk to adjust the inclination angle of the hob; When the gear is placed on the placing disk, an appropriate amount of limiting blocks protrude to limit the gear, the second lifting plate rises, driving the second folding plate and the first folding plate to fold, and limiting the upper end of the gear.

2. The hob fixed transmission gear processing device according to claim 1, characterized in that: On the upper end of the base is fixedly connected a hollow tube, and the lower end of the support frame is movably sleeved in the hollow tube, at the lower end of the inner cavity of the base is fixedly installed a first electric push rod, and the upper end of the first electric push rod is fixedly connected to the lower end of the support frame.

3. The hob fixed transmission gear processing device according to claim 1, characterized in that: On one side of the tool holder close to the limit disk are fixedly connected two groups of positioning plates, both of the two groups of positioning plates are slidably connected in the inner cavity of the limit disk, and one end of both of the two groups of positioning plates close to the support frame penetrates through the limit disk and is located outside the limit disk, on the side of the limit disk close to the support frame are provided multiple groups of positioning grooves, the parts of the two groups of positioning plates extending out of the limit disk are both attached to the outside of the positioning grooves, and on the part of the positioning plate located outside the positioning groove is movably inserted a positioning rod, one end of the positioning rod close to the tool holder is inserted into the inner cavity of the positioning groove, in the inner cavity of the support frame is fixedly installed a first motor, and the output shaft of the first motor penetrates through the support frame and the limit disk and is fixedly connected to the rotating shaft of the tool holder.

4. The hob fixed transmission gear processing device according to claim 1, characterized in that: The cutting assembly further includes a first lead screw, the first lead screw is rotatably connected in the inner cavity of the tool holder, and the outer circle of the middle section of the first lead screw is threadedly connected to the middle of the sliding frame.

5. The hob fixed transmission gear processing device according to claim 1, characterized in that: At the lower end of the sliding frame is fixedly connected a dismounting block, the rotating shafts at both ends of the hob are respectively rotatably connected in the inner cavities of the sliding frame and the dismounting block, and in the inner cavity of the tool holder, at the end of the tool holder far from the sliding frame is fixedly installed a second motor, and on the output shaft of the second motor is fixedly connected a driving sleeve, and the inner circle of the driving sleeve is movably inserted on the rotating shaft of the hob.

6. The hob fixed transmission gear processing device according to claim 1, characterized in that: The fixing assembly further includes a moving rod, the moving rod is slidably connected to the middle of the upper end of the base, on both the front and rear sides of the upper end of the base are fixedly installed limiting strips, both the front and rear ends of the moving rod are in contact connection with one side of the two groups of limiting strips close to each other, and in the middle of the inner cavity of the base is fixedly installed a second electric push rod, and the output end of the second electric push rod is fixedly connected to the lower end of the moving rod.

7. The hob fixed transmission gear processing device according to claim 6, characterized in that: The fixing component further includes a third motor, which is installed at the lower end of the moving rod. A rotating rod is fixedly connected to the output shaft of the third motor. The rotating rod is rotatably connected to the inner cavity of the moving rod through a ball bearing. The upper end of the rotating rod penetrates through the moving rod. 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. A plurality of grooves are formed in the upper end of the placing plate. A plurality of limiting blocks are respectively slidably connected in the plurality of grooves. Springs are fixedly connected to the lower ends of the limiting blocks, and the lower ends of the springs are fixedly connected to the lower ends of the inner cavities of the grooves.

8. The hob fixed transmission gear processing device according to claim 1, characterized in that: There are a plurality of limiting blocks, namely four strip-shaped blocks and four arc-shaped blocks. The strip-shaped blocks are correspondingly arranged in the shaft holes of the gears, while the arc-shaped blocks are symmetrically distributed on both sides of the upper end of the placing plate, and the arc-shaped blocks are correspondingly arranged in the circular holes of the gears.

9. The hob fixed transmission gear processing device according to claim 1, characterized in that: The limiting component further includes a cross tube, which is fixedly installed in the middle of the upper end of the placing plate. A second lead screw is threadedly connected to the middle of the upper end of the cross tube. The lower end of the second lead screw extends into the inner cavity of the cross tube. The middle part of the upper end of the first lifting plate is rotatably connected to the lower end of the second lead screw.

10. The hob fixed transmission gear processing device according to claim 9, characterized in that: The lifting rod is movably sleeved in the inner cavity of the second lead screw. The lower end of the lifting rod penetrates through the second lead screw and the first lifting plate and is fixedly connected to the second lifting plate. The first folding plate and the second folding plate are both slidably connected in the grooves of the cross tube.

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