A cutting device for machining tractor gearbox

Abstract

The invention discloses a cutting device for machining a tractor gearbox, which relates to the technical field of tractor gearbox machining equipment. A bearing mechanism for bearing a gear to be machined is provided in the middle of an upper surface of a base, and slide rails arranged along the length direction of the base are provided on both upper and lower sides of the bearing mechanism, and movable blocks located on both sides of the bearing mechanism are respectively slidably matched at both ends of the slide rails, and mounting seats are provided on the two movable blocks, one of the mounting seats is provided with a cutting mechanism for cutting the gear to be machined on the bearing mechanism, and the other mounting seat is provided with a grinding mechanism for grinding the gear to be machined. Based on the original cutting process of the tractor gearbox gear, the invention can synchronously grind the tooth groove cut on the gear for secondary processing, which not only greatly improves the processing quality of the tractor gearbox gear, but also reduces the subsequent grinding process, and greatly improves the processing production efficiency of the tractor gearbox gear.

Description

Technical Field

[0001] The invention relates to the technical field of tractor gearbox processing equipment, and in particular to a cutting device for processing a tractor gearbox. Background Art

[0002] With the development of modern science and technology, especially in the agricultural production process, tractors have become a common production and processing vehicle, and their demand is increasing. In the production process of tractors, the gearbox is a very important component of the tractor. It can change the transmission ratio and expand the torque and speed of the driving wheel. Therefore, the demand for gearboxes is also increasing. Gears are an important component of the gearbox. In the production and processing of gearbox gears, they need to be cut.

[0003] In the existing process of cutting tractor gearbox gears, gear hobbing machines, gear grinders or gear milling machines are usually used for processing. Among them, gear hobbing machines are commonly used equipment for gear tooth groove processing and are widely used in gear processing and production. The existing gear hobbing machines have the following shortcomings in the processing and production process:

[0004] 1. The gear hobbing machine will produce burrs and rough edges during the gear cutting process. Since these burrs and rough edges cannot be polished in time, the blade will repeatedly contact the burrs and rough edges in the tooth groove during the cutting process, which will not only easily cause wear to the blade, but also the burrs and rough edges will enter the tooth groove and affect the quality of the tooth groove;

[0005] 2. After the gear hobbing machine cuts the gear, there are often a lot of burrs and burrs on the gear tooth edges, which requires secondary grinding of the cut gear, which not only affects the processing efficiency of the gear, but also increases the cost due to the increase in grinding steps;

[0006] Therefore, a kind of tractor gearbox processing cutting device that can overcome above-mentioned disadvantages is badly needed. Summary of the invention

[0007] In order to overcome the shortcomings of the background technology, the present invention discloses a cutting device for processing a tractor gearbox. On the basis of the original cutting process for the tractor gearbox gear, the present invention can simultaneously perform secondary grinding process on the tooth grooves cut on the gear, which not only greatly improves the processing quality of the tractor gearbox gear, but also reduces the subsequent grinding process, thereby greatly improving the processing production efficiency of the tractor gearbox gear.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] A cutting device for machining a tractor gearbox comprises a base, a bearing mechanism for bearing a gear to be machined is arranged in the middle of the upper surface of the base, slide rails arranged along the length direction of the base are arranged on the upper and lower sides of the bearing mechanism, movable blocks located on both sides of the bearing mechanism are slidably matched at both ends of the slide rails, the two movable blocks are spaced the same as the bearing mechanism, a driving mechanism for driving the two movable blocks to move synchronously in the same direction or in opposite directions along the slide rails is arranged on the base, mounting seats are arranged on the two movable blocks, a cutting mechanism for cutting the gear to be machined on the bearing mechanism is arranged on the side of one mounting seat facing the bearing mechanism, and a grinding mechanism for grinding the tooth groove cut on the gear to be machined is arranged on the side of the other mounting seat facing the bearing mechanism;

[0010] The cutting mechanism comprises two mounting plates A arranged in parallel and correspondingly, a rotating shaft A is rotatably mounted between the two mounting plates A, a plurality of cutting blades are arranged in an orderly manner along the axial direction of the rotating shaft A and can rotate synchronously with the rotating shaft A in the same direction, a support seat A is arranged on the outer side of any mounting plate A, and a motor A for driving the rotating shaft A is arranged on the support seat A;

[0011] The grinding mechanism includes two parallel and corresponding mounting plates B, a rotating shaft B is rotatably mounted between the two mounting plates B, a plurality of circular plates are arranged in an orderly manner along the axial direction of the rotating shaft B and can rotate synchronously with the rotating shaft B in the same direction, a plurality of grinding parts are arranged in an orderly manner along the circumferential direction of the circular plates and are adapted to the tooth grooves cut on the gear to be processed, a support seat B is provided on the outer side surface of any mounting plate B, and a motor B for driving the rotating shaft B is provided on the support seat B.

[0012] Furthermore, the grinding piece includes a mounting block and a grinding head. A plurality of mounting blocks are fixedly mounted on the outer edge of the circular plate and are arranged in an orderly manner along the circumference of the circular plate. The grinding head is detachably mounted on the outer surface of the mounting block.

[0013] Furthermore, an elastic telescopic rod perpendicular to the mounting block is provided on the outer surface of the mounting block, and the grinding head is threadedly connected to the end of the elastic telescopic rod.

[0014] Furthermore, the area of ​​the upper end surface of the grinding head is larger than the area of ​​the lower end surface thereof, and a grinding bevel is formed on the side surface of the grinding head.

[0015] Furthermore, the bearing mechanism includes a bearing base rotatably mounted on the upper part of the base, a bearing rod is vertically arranged on the upper part of the bearing base, a bearing plate for supporting the lower end surface of the gear to be processed is provided on the lower side of the bearing rod body, and a limiting nut for contacting the upper end surface of the gear to be processed is threadedly connected on the upper side of the bearing rod body.

[0016] Furthermore, an annular drainage groove is provided on the upper surface of the base for collecting and discharging the cutting fluid poured during the gear cutting process. The annular drainage groove is arranged around the bearing mechanism and is located between the two slide rails.

[0017] Furthermore, a screen for blocking debris is detachably mounted on the notch of the annular drainage trough.

[0018] Furthermore, the driving mechanism includes side plates, a bidirectional screw and a driving motor. Side plates parallel to each other are provided on both sides of the upper surface of the base. A bidirectional screw passing through two movable blocks is rotatably installed between the two side plates. The two movable blocks are respectively matched with the threads at both ends of the bidirectional screw. A driving motor for driving the bidirectional screw to rotate is provided on one side of any side plate.

[0019] Furthermore, the mounting seat includes a lifting seat, a movable seat and a rotating seat. The lifting seat is fixedly mounted on the upper part of the movable block. A vertically arranged guide rail is provided on the side of the lifting seat facing the supporting mechanism. The movable seat slides with the guide rail and is lifted and lowered by the lifting seat. A swivel flange is provided on the side of the movable seat facing the supporting mechanism. A clamping plate for clamping and fixing the rotating seat is provided on the surface of the swivel flange. The cutting mechanism or the grinding mechanism is installed on the rotating seat.

[0020] Furthermore, a numerical control system terminal for intelligently controlling the lifting seat, the slewing flange, the driving mechanism, the cutting mechanism and the grinding mechanism is provided on one side of the base.

[0021] Compared with the prior art, the invention has the following beneficial effects: by providing a grinding mechanism corresponding to the cutting mechanism, during the process of the cutting mechanism cutting the gear, the grinding mechanism can simultaneously perform fine grinding on the cut tooth groove, thereby greatly improving the cutting efficiency and quality of the gear;

[0022] By setting movable blocks with the same spacing and moving synchronously toward or away from each other, when the cutting mechanism moves to one side of the gear to be processed, the grinding mechanism can also move synchronously to the other side of the gear to be processed, so that the grinding mechanism can directly grind the gear cut by the cutting mechanism;

[0023] By providing a grinding head connected by an elastic telescopic rod, not only can the hard contact between the grinding head and the gear be avoided, thus preventing the wear of the grinding head and the gear to be processed, but also it can ensure that the grinding head can fully contact the tooth groove, thus ensuring the grinding processing quality of the tooth groove;

[0024] By setting a grinding bevel on the side of the grinding head, the grinding head can smoothly turn into the tooth groove to grind the tooth groove, avoiding the situation where the grinding head and the tooth groove are misaligned;

[0025] By setting up an annular drainage groove, the cutting fluid poured during the gear cutting process can be collected and discharged to prevent the cutting fluid from spreading and polluting the base and the surrounding environment;

[0026] By setting up a screen, the debris generated by cutting can be screened and collected to avoid the mixed collection of debris and cutting fluid;

[0027] The structure of the mounting seat can realize the lifting and lowering adjustment of the grinding mechanism and the cutting mechanism, as well as the angle deflection adjustment, which provides strong support for the processing of gears of different specifications and models;

[0028] The invention can grind the tooth grooves cut on the gear synchronously on the basis of the original cutting process of the tractor gearbox gear, which not only greatly improves the processing quality of the tractor gearbox gear, but also reduces the subsequent grinding process, greatly improves the processing production efficiency of the tractor gearbox gear and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the cutting mechanism structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the cutting blade of the present invention;

[0032] Figure 4 It is a schematic diagram of the grinding mechanism structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the grinding piece of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the grinding head of the present invention;

[0035] Figure 7 It is a schematic diagram of the base structure of the present invention;

[0036] Figure 8 It is a schematic diagram of the mounting platform structure of the present invention.

[0037] In the figure: 1. base; 2. driving mechanism; 3. movable block; 4. mounting seat; 5. grinding mechanism; 6. bearing mechanism; 7. cutting mechanism; 8. mounting plate A; 9. cutting blade; 10. motor A; 11. support seat A; 12. rotating shaft A; 13. mounting plate B; 14. grinding piece; 15. circular plate; 16. motor B; 17. support seat B; 18. grinding head; 19. elastic telescopic rod; 20. mounting block; 21. rotating shaft B; 22. grinding inclined surface; 23. screen; 24. bearing rod; 25. limiting nut; 26. bearing plate; 27. slide rail; 28. bearing base; 29. ​​annular drainage groove; 30. side plate; 31. transmission gear; 32. driving gear; 33. driving motor; 34. bidirectional screw rod; 35. lifting seat; 36. guide rail; 37. movable seat; 38. rotating seat; 39. clamping plate; 40. swivel flange DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0039] Please refer to the instruction manual Figure 1-8 , the present invention provides a technical solution:

[0040] Example 1, please refer to the attached manual Figure 1 , 2 , 3, 4, 5 and 7, a cutting device for machining a tractor gearbox, comprising a base 1, a bearing mechanism 6 for bearing a gear to be machined is provided in the middle of the upper surface of the base 1, slide rails 27 arranged along the length direction of the base 1 are provided on both upper and lower sides of the bearing mechanism 6, movable blocks 3 located on both sides of the bearing mechanism 6 are slidably matched at both ends of the slide rail 27, and mounting seats 4 are provided on both movable blocks 3, a cutting mechanism 7 for cutting the gear to be machined on the bearing mechanism 6 is provided on one side of one mounting seat 4 facing the bearing mechanism 6, and a grinding mechanism 5 for grinding the tooth groove cut on the gear to be machined is provided on the other side of the mounting seat 4 facing the bearing mechanism 6;

[0041] The cutting mechanism 7 includes two mounting plates A8 arranged in parallel and correspondingly, a rotating shaft A12 is rotatably mounted between the two mounting plates A8, a plurality of cutting blades 9 are arranged in an orderly manner along the axial direction of the rotating shaft A12 and can rotate synchronously with the rotating shaft A12 in the same direction, and a support seat A11 is provided on the outer side of any mounting plate A8, and a motor A10 for driving the rotating shaft A12 is provided on the support seat A11;

[0042] The grinding mechanism 5 includes two parallel corresponding mounting plates B13, a rotating shaft B21 is rotatably mounted between the two mounting plates B13, a support seat B17 is provided on the outer side of any mounting plate B13, a motor B16 for driving the rotating shaft B21 is provided on the support seat B17, a plurality of circular plates 15 are provided on the shaft body of the rotating shaft B21, which are arranged in an orderly manner along the axial direction of the rotating shaft B21 and can rotate synchronously with the rotating shaft B21 in the same direction, a plurality of grinding members 14 are arranged in an orderly manner along the circumferential direction of the circular plate 15 and are adapted to the tooth grooves cut on the gear to be processed, the grinding member 14 includes a mounting block 20 and a grinding head 18, a plurality of mounting blocks 20 arranged in an orderly manner along the circumferential direction of the circular plate 15 are fixedly mounted on the outer edge of the circular plate 15, and a grinding head 18 is installed on the outer surface of the mounting block 20;

[0043] The bearing mechanism 6 includes a bearing base 28 rotatably mounted on the upper part of the base 1. The rotational matching structure of the bearing base 28 and the base 1 is the same as the existing gear hobbing machine structure. A bearing rod 24 is vertically arranged on the upper part of the bearing base 28. A bearing plate 26 for supporting the lower end surface of the gear to be processed is arranged on the lower side of the bearing rod 24. A limiting nut 25 for contacting the upper end surface of the gear to be processed is threadedly connected to the upper side of the bearing rod 24.

[0044] When processing and producing the gear of the tractor gearbox, the gear to be processed is sleeved on the bearing rod 24. When the gear to be processed is placed horizontally on the upper part of the bearing plate 26, a limit nut 25 is installed on the bearing rod 24 to press and limit the gear to be processed. Then, the two movable blocks 3 are driven along the slide rail 27 to drive the cutting mechanism 7 and the grinding mechanism 5 to be located on both sides of the gear to be processed. After adjusting the spacing between the cutting mechanism 7 and the gear to be processed according to the processing requirements of the gear to be processed, the position of the grinding mechanism 5 is adjusted according to the same requirements. The several cutting blades 9 in the cutting mechanism 7 correspond to the several circular plates 15 in the grinding mechanism 5 one by one. The several cutting blades 9 in the cutting mechanism 7 gradually cut the tooth grooves on the gear to be processed. As the gear to be processed rotates, the grinding head 18 in the grinding mechanism 5 is transferred into the tooth grooves preliminarily cut by the cutting mechanism 7 and grinds the tooth grooves. As the processed gear continues to rotate, the cutting mechanism 7 cuts the tooth grooves, and the grinding mechanism 5 grinds the cut tooth grooves, and finally completes the cutting and grinding operations on the gear to be processed.

[0045] Example 2, please refer to the attached manual Figure 4 and 5In order to prevent the rigid contact between the grinding head 18 and the gear to be processed, and to achieve sufficient contact grinding between the grinding head 18 and the tooth groove of the gear to be processed, an elastic telescopic rod 19 perpendicular to the mounting block 20 is provided on the outer surface of the mounting block 20. The elastic telescopic rod 19 is a structure in which a spring is sleeved on the outside of the telescopic rod, or a structure in which a spring is provided inside the telescopic rod. The grinding head 18 is installed at the end of the elastic telescopic rod 19. In order to facilitate the disassembly and replacement of the grinding head 18, the grinding head 18 is threadedly connected to the end of the elastic telescopic rod 19.

[0046] For example 3, please refer to the attached Figure 5 and 6 When the grinding head 18 of the grinding mechanism 5 is grinding the tooth groove, as the grinding head 18 and the elastic telescopic rod 19 are subjected to force for a long time, the grinding head 18 is very likely to be misaligned with the tooth groove of the gear to be processed, which causes the grinding head 18 to be unable to accurately rotate into the tooth groove, affecting the subsequent grinding of the tooth groove. In order to ensure that the grinding head 18 can accurately rotate into the tooth groove, the upper end surface area of ​​the grinding head 18 is larger than the lower end surface area, and a grinding bevel 22 is formed on the side of the grinding head 18. The setting of the grinding bevel 22 can not only ensure that the grinding head 18 can accurately rotate into the tooth groove, but also can gradually grind the tooth groove, thereby reducing the wear of the grinding head 18.

[0047] Example 4, please refer to the attached manual Figure 1 and 7 When the gear to be processed is cut and ground, a large amount of heat will be generated by the cutting blade 9 and the gear to be processed. Excessive temperature will cause the cutting blade 9 to wear more severely, and the gear to be processed to deform or harden. Therefore, cutting fluid needs to be poured during the cutting and grinding process. The poured cutting fluid directly flows onto the base 1, which not only pollutes the base 1 and the surrounding environment, but also causes waste. In order to collect the cutting fluid, an annular drainage groove 29 is provided on the upper surface of the base 1 for collecting and discharging the cutting fluid poured during the gear cutting process. The annular drainage groove 29 is arranged around the bearing mechanism 6 and is located between the two slide rails 27. The two slide rails 27 can effectively prevent the cutting fluid from scattering. The bottom of the annular drainage groove 29 is discharged and collected through a conduit.

[0048] During the cutting fluid collection and processing process, the debris generated by the cutting and grinding of the gear to be processed will also fall onto the base 1. These debris are mixed with the cutting fluid, which is not conducive to the subsequent collection and processing of the cutting fluid. In order to achieve the screening of the debris, a screen 23 for blocking the debris is detachably installed on the notch of the annular drainage groove 29.

[0049] Example 5, please refer to the attached manual Figure 1 and 7In the process of cutting and grinding the gear to be processed, the distance between the cutting mechanism 7 and the grinding mechanism 5 and the gear to be processed should be the same. In order to realize the synchronous and convenient adjustment of the cutting mechanism 7 and the grinding mechanism 5, the distance between the two movable blocks 3 and the bearing mechanism 6 is the same. The base 1 is provided with a driving mechanism 2 for driving the two movable blocks 3 to move synchronously in the same direction or in reverse directions along the slide rail 27. The driving mechanism 2 includes a side plate 30, a bidirectional screw rod 34 and a driving motor 33. Both sides of the upper surface of the base 1 are provided with side plates 30 corresponding to each other, and a rotating shaft penetrating the two side plates 30 is installed between the two side plates 30. The two movable blocks 3 are respectively matched with the two ends of the two-way screw rod 34 by threads. A driving motor 33 for driving the two-way screw rod 34 to rotate is provided on one side of any side plate 30. A driving gear 32 is provided at the output end of the driving motor 33. The end of the two-way screw rod 34 close to the driving motor 33 passes through the side plate 30, and a transmission gear 31 meshing with the driving gear 32 is provided at its end. The two-way screw rod 34 can be used to realize synchronous drive adjustment of the two movable blocks 3, thereby providing strong support for the subsequent synchronous adjustment of the cutting mechanism 7 and the grinding mechanism 5.

[0050] Example 6, please refer to the attached manual Figure 1 and 8 In order to meet the cutting and grinding processing operations of the cutting mechanism 7 and the grinding mechanism 5 on gears of different specifications and models, the mounting seat 4 includes a lifting seat 35, a movable seat 37 and a rotating seat 38. The lifting seat 35 is fixedly mounted on the upper part of the movable block 3. A vertically arranged guide rail 36 is provided on the side of the lifting seat 35 facing the supporting mechanism 6. The movable seat 37 is slidably matched with the guide rail 36 and is lifted and lowered by the lifting seat 35. A cylinder for pushing the movable seat 37 to lift and slide along the guide rail 36 can be provided in the movable seat 37. A swivel flange 40 is provided on the side of the movable seat 37 facing the supporting mechanism 6. A servo motor for driving the swivel flange 40 to rotate is provided in the movable seat 37, and a clamping plate 39 for clamping and fixing the swivel seat 38 is provided on the surface of the swivel flange 40. The cutting mechanism 7 or the grinding mechanism 5 is installed on the swivel seat 38. The lifting seat 35 can drive the cutting mechanism 7 and the grinding mechanism 5 to be lifted and lowered, and the swivel flange 40 can drive the cutting mechanism 7 and the grinding mechanism 5 to be angularly deflected, thereby meeting the processing requirements for different tooth grooves. The mounting seat 4 can also adopt the same mechanical structure as the existing gear hobbing machine structure to realize the adjustment of the cutting mechanism 7 or the grinding mechanism 5.

[0051] Example 7, please refer to the attached manual Figure 1-8 In order to meet the automatic control of this structure, a numerical control system terminal for intelligently controlling the lifting seat 35, the rotating flange 40, the driving mechanism 2, the cutting mechanism 7 and the grinding mechanism 5 is provided on one side of the base 1. The numerical control system terminal adopts the numerical control system used in the existing gear hobbing machine for automatic intelligent control.

[0052] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A cutting device for machining a tractor gearbox, comprising a base (1), characterized in that: A bearing mechanism (6) for bearing a gear to be processed is provided in the middle of the upper surface of the base (1), and slide rails (27) are provided on the upper and lower sides of the bearing mechanism (6) along the length direction of the base (1), and movable blocks (3) located on both sides of the bearing mechanism (6) are slidably matched at both ends of the slide rail (27), and the spacing between the two movable blocks (3) and the bearing mechanism (6) is the same. A driving mechanism (2) for driving the two movable blocks (3) to move synchronously in the same direction or in opposite directions along the slide rail (27) is provided on the base (1), and a mounting seat (4) is provided on the side of one of the mounting seats (4) facing the bearing mechanism (6) for cutting the gear to be processed on the bearing mechanism (6), and a grinding mechanism (5) for grinding the tooth groove cut on the gear to be processed is provided on the side of the other mounting seat (4) facing the bearing mechanism (6); The cutting mechanism (7) comprises two mounting plates A (8) arranged in parallel and correspondingly, a rotating shaft A (12) being rotatably mounted between the two mounting plates A (8), a plurality of cutting blades (9) being arranged in an orderly manner along the axial direction of the rotating shaft A (12) and capable of rotating synchronously with the rotating shaft A (12) and in the same direction, a support seat A (11) being provided on the outer side surface of any mounting plate A (8), and a motor A (10) for driving the rotating shaft A (12) being provided on the support seat A (11); The grinding mechanism (5) comprises two mounting plates B (13) arranged in parallel and correspondingly, a rotating shaft B (21) is rotatably mounted between the two mounting plates B (13), a plurality of circular plates (15) are arranged in an orderly manner along the axial direction of the rotating shaft B (21) and are capable of rotating synchronously with the rotating shaft B (21) and in the same direction, a plurality of grinding pieces (14) are arranged in an orderly manner along the circumferential direction of the circular plates (15) and are adapted to the tooth grooves cut on the gear to be processed, and the grinding piece (14) comprises a mounting block (20) and a grinding head (18). A plurality of mounting blocks (20) are fixedly mounted on the outer edge of the circular plate (15) and are arranged in an orderly manner at intervals along the circumference of the circular plate (15). An elastic telescopic rod (19) perpendicular to the mounting block (20) is provided on the outer surface of the mounting block (20). The grinding head (18) is threadedly connected to the end of the elastic telescopic rod (19). The upper end surface area of ​​the grinding head (18) is larger than the lower end surface area. A grinding inclined surface (22) is formed on the side surface of the grinding head (18). A support seat B (17) is provided on the outer side surface of any mounting plate B (13). A motor B (16) for driving a rotating shaft B (21) is provided on the support seat B (17).

2. A cutting device for machining a tractor gearbox according to claim 1, characterized in that: The bearing mechanism (6) comprises a bearing base (28) rotatably mounted on the upper part of the base (1); a bearing rod (24) is vertically arranged on the upper part of the bearing base (28); a bearing plate (26) for supporting the lower end surface of the gear to be processed is arranged on the lower side of the bearing rod (24); and a limiting nut (25) for contacting the upper end surface of the gear to be processed is threadedly connected to the upper side of the bearing rod (24).

3. A cutting device for machining a tractor gearbox according to claim 2, characterized in that: An annular drainage groove (29) for collecting and discharging cutting fluid poured during the gear cutting process is provided on the upper surface of the base (1); the annular drainage groove (29) is arranged around the bearing mechanism (6) and is located between the two slide rails (27).

4. A cutting device for machining a tractor gearbox according to claim 3, characterized in that: A screen (23) for blocking debris is detachably mounted on the notch of the annular drainage groove (29).

5. The cutting device for machining a tractor gearbox according to claim 1, characterized in that: The driving mechanism (2) comprises a side plate (30), a bidirectional screw rod (34) and a driving motor (33). The upper surface of the base (1) is provided with side plates (30) on both sides thereof which are parallel to each other and correspond to each other. A bidirectional screw rod (34) which penetrates two movable blocks (3) is rotatably mounted between the two side plates (30). The two movable blocks (3) are respectively threadedly engaged with two ends of the bidirectional screw rod (34). A driving motor (33) for driving the bidirectional screw rod (34) to rotate is provided on one side of any side plate (30).

6. A cutting device for machining a tractor gearbox according to claim 1, characterized in that: The mounting seat (4) comprises a lifting seat (35), a movable seat (37) and a rotating seat (38); the lifting seat (35) is fixedly mounted on the upper part of the movable block (3); a vertically arranged guide rail (36) is provided on the side of the lifting seat (35) facing the supporting mechanism (6); the movable seat (37) is slidably matched with the guide rail (36) and is lifted and lowered by the lifting seat (35); a swivel flange (40) is provided on the side of the movable seat (37) facing the supporting mechanism (6); a clamping plate (39) for clamping and fixing the rotating seat (38) is provided on the surface of the swivel flange (40); and a cutting mechanism (7) or a grinding mechanism (5) is mounted on the rotating seat (38).

7. A cutting device for machining a tractor gearbox according to claim 6, characterized in that: A numerical control system terminal for intelligently controlling the lifting seat (35), the slewing flange (40), the driving mechanism (2), the cutting mechanism (7) and the grinding mechanism (5) is provided on one side of the base (1).

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