A gear cutting and forming machine tool

Abstract

The present invention discloses a gear cutting and forming machine tool, which relates to the technical field of gear cutting equipment. The present invention includes a machine tool, wherein a step cutting assembly is fixedly mounted on the cutting drive of the machine tool, and the step cutting assembly consists of a cutting shaft, a fixed cutting tool and a plurality of groups of adjustable cutting tools. The cutting shaft is fixedly mounted on the cutting drive, the fixed cutting tool is fixedly mounted on the cutting shaft, and the plurality of groups of adjustable cutting tools are slidably connected to the cutting shaft. During cutting, the fixed cutting tool and the plurality of groups of adjustable cutting tools are distributed in a stepped manner. The present invention adopts segmented cutting, which can divide a large cutting amount into a plurality of small cutting steps according to the geometric shape of the gear and the cutting requirements, thereby reducing the burden on the tool and the workpiece caused by excessive cutting depth during a single cutting. By designing multiple steps, the cutting amount of each stage can be gradually increased or decreased, effectively avoiding vibration and tool damage caused by excessive cutting amount.

Description

Technical Field

[0001] The present invention relates to the technical field of gear cutting equipment, in particular to a gear cutting and forming machine tool. Background Art

[0002] A gear cutting and forming machine is a specialized machine tool used for producing gears, enabling efficient machining of gear shapes and profiles. Using specialized cutting tools and machining processes, the machine utilizes cutting and forming methods to shape the gear profile. Common gear cutting methods include gear milling, gear shaping, and gear skiving.

[0003] In a Chinese patent (publication number: CN119566421A), a cutting machine tool for precision gear processing with automatic tool setting is disclosed, which includes a cutting table, a mounting slot is provided in the middle of the cutting table, and a placement frame is provided at the lower end of the mounting slot, and a placement fixing component is provided inside the placement frame, a mounting frame is provided at the upper end of the cutting table, and a surface detector is provided on the inner side of the upper end of the mounting frame above the placement fixing component, and a bidirectional motor is provided in the middle of the top of the upper end of the mounting frame, one output end of the bidirectional motor is connected to the cutting component, and the cutting component includes a cutting blade, and a threaded column is threadedly connected to the middle of the cutting blade, and the top of the threaded column is connected to the middle of the lower end of the lifting top plate, and the lifting plate is connected to the lifting plate. The two sides of the lowering top plate are respectively connected to the mounting frame and the fixed vertical plate through symmetrically arranged movable guide rails, and the top of the lifting top plate is rotatably connected to the side column arranged on one side of the eccentric turntable through a lifting adjustment assembly; the placing and fixing assembly includes a positioning base, and a rotating seat is arranged inside the upper end of the positioning base, and at the same time, the two sides of the upper end of the rotating seat are connected to the two sides of the plug-in tube through symmetrically arranged support connecting columns, and the middle of the plug-in tube is snap-connected with a mounting plug-in, and the outer side of the upper end of the mounting plug-in is detachably connected to the middle of the workpiece body, and at the same time, the lower end of the mounting plug-in is connected to the middle of the upper end of the rotating seat through a clamping and fixing assembly, and the lower end of the rotating seat is connected to the transmission assembly through a driving connection assembly, and the transmission assembly is connected to the output end on the other side of the bidirectional motor.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] This patent primarily uses the gear shaping method to machine gears. Similar to existing gear shaping cutting equipment, the gear shaping cutter gradually cuts the tooth profile on the workpiece surface. The tooth profile is gradually formed through the relative motion between the cutter and the workpiece. The gear shaping method can precisely control the tooth profile and size of the gear, making it suitable for high-precision gear machining. However, in actual machining, the large feed rate in traditional one-time deep cutting can lead to error accumulation, and multiple shallow cuts not only affect cutting efficiency but also easily lead to error accumulation, especially in high-precision machining, which can affect gear machining accuracy. Furthermore, excessive cutting depth in a single cut places a burden on the tool and workpiece, shortening tool life. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems and provide a gear cutting and forming machine tool.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A gear cutting and forming machine tool includes a machine tool, wherein a stepped cutting assembly is fixedly mounted on the cutting drive of the machine tool, the stepped cutting assembly consisting of a cutting shaft, a fixed cutting tool and multiple sets of adjustable cutting tools, the cutting shaft is fixedly mounted on the cutting drive, the fixed cutting tool is fixedly mounted on the cutting shaft, and the multiple sets of adjustable cutting tools are slidably connected to the cutting shaft, during cutting, the fixed cutting tool and the multiple sets of adjustable cutting tools are distributed in a stepped manner, and during downward cutting, the fixed cutting tool is closest to the center of the gear being cut, and during upward cutting, the fixed cutting tool is farthest from the center of the gear being cut.

[0009] Furthermore, a mounting plate is fixedly installed on the outside of the cutting shaft, an adjusting motor is provided on the outside of the mounting plate, a driving wheel is fixedly installed on the output end of the adjusting motor, two sets of driven wheels are rotatably installed on the side of the mounting plate away from the cutting shaft, the driving wheel is connected to the two sets of driven wheels through a toothed transmission belt, a number of adjusting screws are rotatably installed inside the mounting plate, a transmission gear set is provided on the end of the adjusting screw away from the cutting shaft, the transmission gear set is meshed with the toothed transmission belt, an adjusting nut is provided on the top of the adjustable cutting tool, the adjusting nut is threadedly connected to the corresponding adjusting screw, and the thread pitch of the adjusting screw increases from top to bottom.

[0010] Furthermore, the same group of adjustable cutting tools corresponds to two groups of adjusting screws, and two groups of adjusting nuts are provided on the top of the adjustable cutting tools.

[0011] Furthermore, the adjusting motor is slidably connected to the outside of the mounting plate, and a tensioning spring is provided between the adjusting motor and the mounting plate. The transmission gear group is composed of multiple sets of gears, and the radius of each set of gears is different. Multiple sets of gears can mesh with the toothed transmission belt. A sleeve is provided inside the transmission gear group, and a shaft key sliding hole is provided on the inner wall of the sleeve. A sliding shaft is provided at the end of the adjusting screw away from the cutting shaft, and the sliding shaft is slidably inserted in the shaft key sliding hole. An electric telescopic rod is fixedly installed on the outside of the mounting plate, and a telescopic connecting piece is fixedly installed on the telescopic end of the electric telescopic rod. Multiple sets of transmission gear groups are fixedly installed on the telescopic connecting piece through the sleeve at the same time.

[0012] Furthermore, an outer cover shell is provided on the outer side of the mounting plate, and the outer cover shell protects the driving wheel, the driven wheel and the transmission gear set inside. A through hole is opened through the interior of the outer cover shell, and the sleeve can pass through the through hole. A sliding mouth is opened through the interior of the outer cover shell, and a support drive shaft is rotatably installed on the upper side of the outer side of the outer cover shell. The support drive shaft is driven by a motor, and spiral grooves with opposite rotation directions are opened at both ends of the support drive shaft. A support guide column is fixedly installed at the lower side of the outer side of the outer cover shell, and two groups of support parts are sleeved on the outer side of the support guide column. The two groups of support parts are respectively threadedly connected to the spiral grooves at both ends of the support drive shaft. A plurality of support slide rods are provided on the side of the support part close to the mounting plate. The support slide rods pass through the sliding mouth and extend to the inner side of the toothed transmission belt, and the transmission gear set is located between adjacent support slide rods.

[0013] Furthermore, a rectangular guide groove is provided inside the adjustable cutting tool, and four guide planes are provided in a ring shape on the outer surface of the cutting shaft, and the four guide planes are in contact with the inner wall of the rectangular guide groove.

[0014] Furthermore, an inner rotation groove is provided on the top of the adjustable cutting tool, a swivel is rotatably installed inside the inner rotation groove, an adjusting nut is welded to the swivel, a clamp is provided on the outer side of the mounting plate, an installation groove is provided on the outer surface of the cutting shaft, and the clamp is fixedly installed in the installation groove.

[0015] Furthermore, the outer surface of the cutting shaft is provided with a plurality of positioning thread grooves, the outer sides of the positioning thread grooves are threadedly connected with positioning nuts, and the adjustable cutting tool is located between adjacent positioning nuts.

[0016] Furthermore, a connecting sleeve is installed on the outer surface of the positioning nut, and the end of the adjusting screw close to the cutting shaft is rotatably installed in the connecting sleeve.

[0017] The beneficial effects of the present invention are as follows:

[0018] This invention utilizes segmented cutting, which allows large cuts to be divided into multiple smaller steps based on the gear geometry and cutting requirements. This reduces the burden on the tool and workpiece caused by excessive cutting depth during a single cut. By designing multiple steps, the cutting depth can be gradually increased or decreased in each stage, thereby controlling cutting forces and heat generation, effectively avoiding vibration and tool damage caused by excessive cutting depth.

[0019] The present invention can reduce the error of each feed by using a stepped segmented cutting method, especially in high-precision machining, which helps to maintain the tooth profile accuracy and tooth pitch uniformity of the gear.

[0020] The present invention can automatically change the shape of the cutting tool during cutting by adjusting the setting of the component, thereby achieving high cutting efficiency. At the same time, the step cutting depth can be adjusted according to demand, and the cutting difference between adjacent cutting tools can be changed, thereby having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the step cutting assembly of the present invention cutting downward;

[0023] Figure 3 Schematic diagram of the step cutting assembly of the present invention cutting upward;

[0024] Figure 4 is an exploded view of the step cutting assembly of the present invention;

[0025] Figure 5 This is an exploded schematic diagram of the regulating assembly of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the transmission gear set of the present invention.

[0027] Figure markings: 1. Machine tool; 2. Cutting shaft; 21. Guide plane; 22. Positioning thread groove; 23. Mounting groove; 3. Fixed cutting tool; 4. Adjustable cutting tool; 41. Rectangular guide groove; 42. Inner rotation groove; 43. Swivel; 44. Adjusting nut; 5. Positioning nut; 51. Connecting sleeve; 6. Mounting plate; 61. Clamp; 62. Outer cover; 63. Through hole; 64. Slide; 65. Spread drive shaft; 66. Spread guide column; 67. Spread member; 68. Spread slide rod; 69. Electric telescopic rod; 7. Adjusting screw; 71. Sliding shaft; 8. Adjusting motor; 81. Tensioning spring; 82. Driving wheel; 83. Driven wheel; 9. Telescopic connecting piece; 91. Sleeve; 92. Transmission gear set; 93. Shaft key slide hole. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Example 1, as Figures 1-6 As shown, a gear cutting and forming machine tool includes a machine tool 1. A step cutting assembly is fixedly installed on the cutting drive of the machine tool 1. The step cutting assembly consists of a cutting shaft 2, a fixed cutting tool 3 and multiple sets of adjustable cutting tools 4. The cutting shaft 2 is fixedly installed on the cutting drive, the fixed cutting tool 3 is fixedly installed on the cutting shaft 2, and the multiple sets of adjustable cutting tools 4 are slidably connected to the cutting shaft 2. When cutting, the fixed cutting tool 3 and the multiple sets of adjustable cutting tools 4 are distributed in a stepped manner, and when cutting downward, the fixed cutting tool 3 is closest to the center of the gear being cut, and when cutting upward, the fixed cutting tool 3 is farthest from the center of the gear being cut.

[0030] During machining, when cutting downward, the fixed cutting tool 3 and the multiple sets of adjustable cutting tools 4 are distributed in a stepped manner, and the fixed cutting tool 3 is closest to the center of the gear being cut. Figure 2 As shown, the lowest adjustable cutting tool 4 is involved in cutting first, and then the cutting depth is increased step by step. When cutting upward, the adjustable cutting tool 4 slides relative to the cutting shaft 2. The fixed cutting tool 3 and the multiple sets of adjustable cutting tools 4 are distributed in a stepped manner. The fixed cutting tool 3 is farthest from the center of the gear being cut. Figure 3 As shown, at this time, the feed slide on the machine tool 1 controls the gear feed and performs step cutting again.

[0031] This invention utilizes segmented cutting, which allows large cuts to be divided into multiple smaller steps based on the gear geometry and cutting requirements. This reduces the burden on the tool and workpiece caused by excessive cutting depth during a single cut. By designing multiple steps, the cutting depth can be gradually increased or decreased in each stage, thereby controlling cutting forces and heat generation, effectively avoiding vibration and tool damage caused by excessive cutting depth.

[0032] Reduce cutting errors: Through the stepped segmented cutting method, the error of each feed can be reduced, especially in high-precision machining. This method helps to maintain the gear tooth profile accuracy and tooth pitch uniformity.

[0033] Reduce feed rate errors: Typically, a smaller feed rate effectively reduces thermal deformation and cutting forces during cutting, thereby ensuring machining accuracy. Stepped cutting design allows for gradual adjustment of the feed rate, avoiding the unstable machining results caused by excessive cutting forces. In traditional one-shot deep cuts and multiple shallow cuts, feed rate can lead to accumulated errors. Segmented cutting, by controlling the depth and feed rate of each cutting stage, can reduce this accumulated error, thereby improving machining accuracy.

[0034] Embodiment 2, on the basis of the above embodiment, further includes: a mounting plate 6 is fixedly installed on the outer side of the cutting shaft 2, an adjusting motor 8 is provided on the outer side of the mounting plate 6, a driving wheel 82 is fixedly installed on the output end of the adjusting motor 8, two groups of driven wheels 83 are rotatably installed on the side of the mounting plate 6 away from the cutting shaft 2, the driving wheel 82 is connected to the two groups of driven wheels 83 through a toothed transmission belt, a plurality of adjusting screws 7 are rotatably installed inside the mounting plate 6, a transmission gear set 92 is provided on the end of the adjusting screw 7 away from the cutting shaft 2, the transmission gear set 92 is meshed with the toothed transmission belt, an adjusting nut 44 is provided on the top of the adjustable cutting tool 4, the adjusting nut 44 is threadedly connected to the corresponding adjusting screw 7, and the thread pitch of the adjusting screw 7 increases from top to bottom.

[0035] After the downward cutting is completed, the control adjustment motor 8 is operated, and the adjustment motor 8 drives the driving wheel 82 to rotate. The driving wheel 82 drives multiple sets of transmission gear sets 92 to rotate at the same time through the toothed transmission belt. The transmission gear set 92 drives several adjusting screws 7 to rotate synchronously at the same time. The adjusting screw 7 drives the adjustable cutting tool 4 to move toward the direction of the processed gear through the adjusting nut 44. Since the thread pitch of the adjusting screw 7 increases from top to bottom, the bottom adjustable cutting tool 4 moves the farthest distance, and the moving distance decreases from bottom to top, thereby completing the step switching. At this time, upward cutting can be performed, and the control is simple and efficient.

[0036] Embodiment 3, based on the above embodiment, further includes that the same set of adjustable cutting tools 4 corresponds to two sets of adjusting screws 7 , and two sets of adjusting nuts 44 are provided on the top of the adjustable cutting tools 4 .

[0037] By adopting the design of double adjusting screws 7, the movement of the adjustable cutting tool 4 is made more stable.

[0038] Embodiment 4, on the basis of the above embodiment, further includes: the adjusting motor 8 is slidably connected to the outside of the mounting plate 6, a tensioning spring 81 is arranged between the adjusting motor 8 and the mounting plate 6, the transmission gear set 92 is composed of multiple sets of gears, the radius of each set of gears is different, and the multiple sets of gears can mesh with the toothed transmission belt, a sleeve 91 is provided inside the transmission gear set 92, and a shaft key sliding hole 93 is opened on the inner wall of the sleeve 91, and a sliding shaft 71 is provided at the end of the adjusting screw 7 away from the cutting shaft 2, and the sliding shaft 71 is slidably inserted into the shaft key sliding hole 93, an electric telescopic rod 69 is fixedly installed on the outside of the mounting plate 6, and a telescopic connecting piece 9 is fixedly installed on the telescopic end of the electric telescopic rod 69, and multiple sets of transmission gear sets 92 are fixedly installed on the telescopic connecting piece 9 through the sleeve 91.

[0039] Furthermore, an outer cover shell 62 is provided on the outer side of the mounting plate 6, and the outer cover shell 62 protects the driving wheel 82, the driven wheel 83 and the transmission gear set 92 inside. A through hole 63 is opened inside the outer cover shell 62, and the sleeve 91 can pass through the through hole 63. A slide 64 is opened inside the outer cover shell 62, and a spread drive shaft 65 is rotatably installed on the upper part of the outer side of the outer cover shell 62. The spread drive shaft 65 is driven by the motor, and spiral grooves with opposite rotation directions are opened at both ends of the spread drive shaft 65. A spread guide column 66 is fixedly installed on the lower side of the outer side of the outer cover shell 62, and two groups of spread parts 67 are sleeved on the outer side of the spread guide column 66. The two groups of spread parts 67 are respectively threadedly connected to the spiral grooves at both ends of the spread drive shaft 65. A plurality of groups of spread slide rods 68 are provided on the side of the spread part 67 close to the mounting plate 6. The spread slide rods 68 pass through the slide 64 and extend to the inner side of the toothed transmission belt. The transmission gear set 92 is located between adjacent spread slide rods 68.

[0040] When it is necessary to adjust the step cutting depth and change the cutting difference of adjacent cutting tools, the expansion drive shaft 65 rotates first under the action of the motor, and the expansion drive shaft 65 drives the two sets of expansion parts 67 to move away from each other. The two sets of expansion parts 67 expand the toothed transmission belts engaged with the transmission gear set 92 through the expansion slide bar 68. Since the transmission gear set 92 is located between the adjacent expansion slide bars 68, the toothed transmission belts will move away from the transmission gear set 92. At the same time, the toothed transmission belt drives the adjustment motor 8 to descend through the driving wheel 82. The adjustment motor 8 squeezes the tensioning spring 81, and then the electric telescopic rod 69 runs, and the electric The movable telescopic rod 69 drives multiple groups of transmission gear sets 92 to move simultaneously through the telescopic connecting piece 9. The gears of other radii on the transmission gear set 92 move to the position of the toothed transmission belt. At this time, the expansion drive shaft 65 is reversed, and the expansion piece 67 is closed. The toothed transmission belt is engaged with the switched gear under the action of the tensioning spring 81. The single sliding distance of the adjustable cutting tool 4 changes. By matching the corresponding number of gear teeth with the corresponding pitch of the adjustment screw 7, the step uniformity can be achieved, ensuring that the cutting depth difference of adjacent cutting tools is the same, and then the cutting depth difference can be automatically adjusted, which is suitable for different gear processing.

[0041] Embodiment 5, based on the above embodiment, further includes: a rectangular guide groove 41 is opened inside the adjustable cutting tool 4, and four guide planes 21 are annularly arranged on the outer surface of the cutting shaft 2, and the four guide planes 21 are in contact with the inner wall of the rectangular guide groove 41.

[0042] Through the design of this embodiment, the stability of the adjustable cutting tool 4 during the cutting process can be improved, and the adjustable cutting tool 4 will not rotate.

[0043] Example six, based on the above example, further includes: an inner rotation groove 42 is opened on the top of the adjustable cutting tool 4, a swivel 43 is rotatably installed inside the inner rotation groove 42, an adjusting nut 44 is welded to the swivel 43, a clamp 61 is provided on the outer side of the mounting plate 6, and an installation groove 23 is opened on the outer surface of the cutting shaft 2, and the clamp 61 is fixedly installed in the installation groove 23.

[0044] Through this design, the position of the mounting plate 6 can be changed so that the mounting plate 6 can be rotated to any position of the cutting tool without affecting the adjustment, and any surface of the cutting tool can be used for cutting.

[0045] Embodiment 7, based on the above embodiment, further includes that the outer surface of the cutting shaft 2 is provided with multiple groups of positioning thread grooves 22, the outer side threads of the positioning thread grooves 22 are connected with positioning nuts 5, and the adjustable cutting tool 4 is located between adjacent positioning nuts 5, which is convenient for disassembly and assembly and convenient for replacing the tool.

[0046] Furthermore, a connecting sleeve 51 is installed on the outer surface of the positioning nut 5, and the adjusting screw 7 is rotatably installed in the connecting sleeve 51 at one end close to the cutting shaft 2. Through this design, the transmission stability of the adjusting screw 7 can be improved, but it affects the adjustment angle of the mounting plate 6. The installation can be selected according to actual use needs.

[0047] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gear cutting and forming machine tool, comprising a machine tool (1), characterized in that: The cutting drive of the machine tool (1) is fixedly mounted with a stepped cutting assembly, which consists of a cutting shaft (2), a fixed cutting tool (3) and a plurality of adjustable cutting tools (4). The cutting shaft (2) is fixedly mounted on the cutting drive, the fixed cutting tool (3) is fixedly mounted on the cutting shaft (2), and the plurality of adjustable cutting tools (4) are slidably connected to the cutting shaft (2). During cutting, the fixed cutting tool (3) and the plurality of adjustable cutting tools (4) are distributed in a stepped manner, and during downward cutting, the fixed cutting tool (3) is closest to the center of the gear being cut, and during upward cutting, the fixed cutting tool (3) is farthest from the center of the gear being cut.

2. A gear cutting and forming machine tool according to claim 1, characterized in that: The outer side of the cutting shaft (2) is fixedly mounted with a mounting plate (6), the outer side of the mounting plate (6) is provided with an adjusting motor (8), the output end of the adjusting motor (8) is fixedly mounted with a driving wheel (82), the side of the mounting plate (6) away from the cutting shaft (2) is rotatably mounted with two sets of driven wheels (83), the driving wheel (82) is connected to the two sets of driven wheels (83) through a toothed transmission belt, a plurality of adjusting screws (7) are rotatably mounted inside the mounting plate (6), the end of the adjusting screw (7) away from the cutting shaft (2) is provided with a transmission gear set (92), the transmission gear set (92) is meshed with the toothed transmission belt, the top of the adjustable cutting tool (4) is provided with an adjusting nut (44), the adjusting nut (44) is threadedly connected to the corresponding adjusting screw (7), and the thread pitch of the adjusting screw (7) increases from top to bottom.

3. A gear cutting and forming machine tool according to claim 2, characterized in that: The same set of adjustable cutting tools (4) corresponds to two sets of adjusting screws (7), and two sets of adjusting nuts (44) are provided on the top of the adjustable cutting tools (4).

4. The gear cutting and forming machine tool according to claim 2, characterized in that: The regulating motor (8) is slidably connected to the outside of the mounting plate (6), and a tensioning spring (81) is provided between the regulating motor (8) and the mounting plate (6). The transmission gear set (92) is composed of multiple sets of gears, each set of gears has a different radius, and the multiple sets of gears can mesh with the toothed transmission belt. A sleeve (91) is provided inside the transmission gear set (92), and a shaft key sliding hole (93) is provided on the inner wall of the sleeve (91). A sliding shaft (71) is provided at one end of the regulating screw (7) away from the cutting shaft (2), and the sliding shaft (71) is slidably inserted into the shaft key sliding hole (93). An electric telescopic rod (69) is fixedly installed on the outside of the mounting plate (6), and a telescopic connecting piece (9) is fixedly installed on the telescopic end of the electric telescopic rod (69). The multiple sets of transmission gear sets (92) are simultaneously fixedly installed on the telescopic connecting piece (9) through the sleeve (91).

5. The gear cutting and forming machine tool according to claim 4, characterized in that: An outer cover shell (62) is provided on the outside of the mounting plate (6), and the outer cover shell (62) protects the driving wheel (82), the driven wheel (83) and the transmission gear set (92) inside. A through hole (63) is provided inside the outer cover shell (62), and the sleeve (91) can pass through the through hole (63). A sliding opening (64) is provided inside the outer cover shell (62). A spreading drive shaft (65) is rotatably installed above the outer side of the outer cover shell (62). The spreading drive shaft (65) is driven by a motor, and the spreading drive shaft (65) is provided at both ends. There are spiral grooves with opposite rotation directions. A support guide column (66) is fixedly installed below the outer side of the outer cover shell (62). Two groups of support members (67) are sleeved on the outer side of the support guide column (66). The two groups of support members (67) are respectively threadedly connected to the spiral grooves at both ends of the support drive shaft (65). The support member (67) is provided with multiple groups of support slide rods (68) on the side close to the mounting plate (6). The support slide rods (68) pass through the sliding mouth (64) and extend to the inner side of the toothed transmission belt. The transmission gear set (92) is located between adjacent support slide rods (68).

6. The gear cutting and forming machine tool according to claim 5, characterized in that: A rectangular guide groove (41) is provided inside the adjustable cutting tool (4), and four guide planes (21) are provided in an annular shape on the outer surface of the cutting shaft (2), and the four guide planes (21) are in contact with the inner wall of the rectangular guide groove (41).

7. The gear cutting and forming machine tool according to claim 6, characterized in that: The top of the adjustable cutting tool (4) is provided with an inner rotation groove (42), a swivel (43) is rotatably mounted inside the inner rotation groove (42), an adjusting nut (44) is welded to the swivel (43), a hoop (61) is provided on the outer side of the mounting plate (6), an outer surface of the cutting shaft (2) is provided with a mounting groove (23), and the hoop (61) is fixedly mounted in the mounting groove (23).

8. The gear cutting and forming machine tool according to claim 7, characterized in that: The outer surface of the cutting shaft (2) is provided with a plurality of positioning thread grooves (22), the outer sides of the positioning thread grooves (22) are threadedly connected to positioning nuts (5), and the adjustable cutting tool (4) is located between adjacent positioning nuts (5).

9. The gear cutting and forming machine tool according to claim 8, characterized in that: A connecting sleeve (51) is installed on the outer surface of the positioning nut (5), and an end of the adjusting screw (7) close to the cutting shaft (2) is rotatably installed in the connecting sleeve (51).

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