An automatic cutting device for machining a transmission housing

Abstract

The present invention relates to the technical field of cutting devices, and particularly relates to an automatic cutting device for processing a gearbox housing, which includes a base in a U-shaped structure. The inner side wall of the base is fixedly connected with a motor through a cross plate. The output end of the motor is fixedly connected with a main shaft. One end of the main shaft is fixedly connected with a cam. An arc-shaped guide plate is fixedly connected to the side wall of the cam. The inner side wall of the base is slidably connected with a rectangular frame through a plurality of sliding blocks. The inner side wall of the rectangular frame is rotatably connected with an upper L-shaped plate through a round shaft. The round shaft is elastically connected with the inner side wall of the rectangular frame through a hairspring. A friction wheel is rotatably connected to the side wall of the upper L-shaped plate through a round rod. By setting structures such as a cam, a rectangular frame, and a plurality of L-shaped plates, the cutting machine and the grinding machine first move horizontally for a certain distance. The cutting machine simultaneously cuts the casting material handles on two gearbox housings, and the two grinding machines synchronously grind the cutting parts of the gearbox housings.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting devices, and particularly relates to an automatic cutting device for processing a transmission housing. Background Art

[0002] The casting of the transmission housing is a common manufacturing process, mainly used for producing the housing part of the transmission. The following is a detailed explanation of the casting of the transmission housing: The casting of the transmission housing mainly uses the casting process to manufacture the housing of the transmission. This process can produce transmission housings with complex shapes and structures, and can meet certain strength and precision requirements. During the casting process, metal materials such as aluminum alloy are usually used as raw materials, and through processes such as melting, pouring, cooling, and solidification, the metal materials are formed into the shape of the transmission housing.

[0003] After the casting of the transmission housing is completed, there will be excess casting material handles on the transmission housing. At this time, these casting material handles need to be cut. Currently, the cutting devices for the casting material handles of the transmission housing can often only perform simple cutting processing on the casting material handles moving in a certain direction, with low automation. For the cut parts after cutting, they cannot be polished, resulting in cutting burrs and the like on the cut parts of the transmission housing, affecting the appearance quality of the transmission housing.

[0004] Therefore, we have proposed an automatic cutting device for processing a transmission housing. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an automatic cutting device for processing a transmission housing.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An automatic cutting device for processing a transmission housing includes a base in a U-shaped structure. The inner side wall of the base is fixedly connected with a motor through a cross plate. The output end of the motor is fixedly connected with a main shaft. One end of the main shaft is fixedly connected with a cam. The side wall of the cam is fixedly connected with an arc-shaped guide plate. The inner side wall of the base is slidably connected with a rectangular frame through a plurality of sliding blocks. The inner side wall of the rectangular frame is rotatably connected with an upper L-shaped plate through a round shaft. The round shaft is elastically connected with the inner side wall of the rectangular frame through a clockwork spring. The side wall of the upper L-shaped plate is rotatably connected with a friction wheel through a round rod. The bottom wall of the upper L-shaped plate is fixedly connected with a lower L-shaped plate. A cutting machine is installed on the bottom wall of the lower L-shaped plate. The inner side wall of the base is fixedly connected with a rectangular block. The top wall of the rectangular frame is fixedly connected with an L-shaped column. The L-shaped column is slidably connected through the side wall of the rectangular block. The L-shaped column is elastically connected with the side wall of the rectangular block through a return spring. The top wall of the rectangular frame is fixedly connected with a sliding rod through a vertical plate.

[0008] Preferably, a through hole is formed in the top wall of the lower L-shaped plate, a rack is slidably connected to the top wall of the lower L-shaped plate, a driving shaft is rotatably connected through the top wall of the upper L-shaped plate, a side rod is fixedly connected to the side wall of the driving shaft, a round pin is fixedly connected to the bottom wall of the side rod, a driving frame is fixedly connected to the top wall of the rack, the driving frame is of a rectangular structure, mounting columns are symmetrically and fixedly connected to the bottom wall of the rack, and a grinding machine is fixedly connected after the mounting columns penetrate through the through hole.

[0009] Preferably, a matching rod is rotatably connected through the top wall of the lower L-shaped plate, an air jet seat is fixedly connected to the bottom wall of the matching rod, and a matching gear is fixedly connected to the side wall of the matching rod.

[0010] Preferably, a support plate is fixedly connected to the inner side wall of the base, a second conical wheel is rotatably connected to the top wall of the support plate, a telescopic universal coupling is fixedly connected to the bottom wall of the second conical wheel, and the other end of the telescopic universal coupling is fixedly connected to the driving shaft.

[0011] Preferably, the round pin is slidably connected to the inner side wall of the driving frame, and the matching gear is meshed with the rack.

[0012] Preferably, a first conical wheel is fixedly connected to the side wall of the main shaft, and the first conical wheel is meshed with the second conical wheel.

[0013] Preferably, a round plate is fixedly connected to one end of the round rod, a circular rod is eccentrically fixedly connected to the side wall of the round plate, a push rod is rotatably connected to the side wall of the circular rod with a dislocation, two extension columns are fixedly connected to the side wall of the upper L-shaped plate, and a box body is fixedly connected to the other end of each extension column. A piston is hermetically and slidably connected to the inner wall of the box body.

[0014] Preferably, a one-way intake pipe and a one-way exhaust pipe are fixedly connected through the inner wall of the box body, and one end of the one-way exhaust pipe away from the box body is fixedly communicated with the air jet seat.

[0015] Preferably, the cam abuts against and slides with the friction wheel, and the sliding rod abuts against and slides with the arc-shaped guide plate.

[0016] Preferably, placing seats are symmetrically and fixedly connected to the base.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] 1. By setting structures such as cams, rectangular frames and multiple L-shaped plates, the cutting machine and the grinding machine first move a certain distance in the horizontal direction, the circular saw part of the cutting machine cuts the casting material handles on the two gearbox housings at the same time, and the two grinding machines grind the cutting part of the gearbox housing synchronously, then the cutting machine and the grinding machine synchronously move a certain distance upward away from the processed gearbox housing, and finally the cutting machine and the grinding machine move a certain distance in the opposite direction to reset and wait for subsequent processing operations;

[0019] 2. During the rotation of the main shaft, by setting up multiple conical wheels, side rods and drive shafts, the drive frame will drive the rack fixedly connected to it to reciprocate in the horizontal direction, then the mounting columns symmetrically fixed on the bottom wall of the rack will drive the corresponding grinder to reciprocate in the horizontal direction, so that the grinding part of the grinder can reciprocate and grind the gearbox housing that has just been cut, thereby improving the smoothness of the gearbox housing surface;

[0020] 3. During the sliding process between the friction wheel and the cam, by setting the box body, piston and round rod and other structures, there is always a piston that squeezes the gas inside the box body to the nozzle head in the jet seat through the one-way air outlet pipe during the sealing sliding process to form a continuous high-speed airflow. This part of the high-speed airflow will blow away the waste chips generated during the cutting and grinding process;

[0021] 4. In the process of the nozzle head in the jet seat spraying out a continuous high-speed airflow, under the action of the rack, the matching gear and the matching rod, the matching rod drives the jet seat fixed at its bottom end to rotate forward and reverse synchronously at a certain angle. Then, the high-speed airflow ejected from the jet seat will be blown out in a reciprocating swing along a certain angle, thereby increasing the cleaning range of waste chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance structure of an automatic cutting device for machining a gearbox housing proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the structure inside the base of an automatic cutting device for machining a gearbox housing proposed by the present invention;

[0024] Figure 3 A top view of a rectangular frame, a rectangular block, a cam and other structures in an automatic cutting device for machining a gearbox housing proposed by the present invention;

[0025] Figure 4 A schematic diagram of the positional relationship of structures such as a rack, a matching gear and an air jet seat in an automatic cutting device for machining a gearbox housing proposed by the present invention;

[0026] Figure 5 for Figure 4 A magnified schematic diagram of the structure of part A;

[0027] Figure 6 Schematic diagram of the internal structure of the box body in an automatic cutting device for machining a gearbox housing proposed by the present invention.

[0028] In the figure: 1, base; 2, cross plate; 3, motor; 4, main shaft; 5, cam; 6, arc-shaped guide plate; 7, sliding block; 8, rectangular frame; 9, vertical plate; 10, sliding rod; 11, L-shaped column; 12, rectangular block; 13, return spring; 14, round shaft; 15, clockwork spring; 16, upper L-shaped plate; 17, lower L-shaped plate; 18, cutting machine; 19, friction wheel; 20, first conical wheel; 21, support plate; 22, drive shaft; 23, telescopic universal coupling; 24, second conical wheel; 25, side rod; 26, round pin; 27, drive frame; 28, rack; 29, through hole; 30, mounting column; 31, grinding machine; 32, matching rod; 33, air jet seat; 34, matching gear; 35, placing seat; 36, round plate; 37, round rod; 38, push rod; 39, box body; 40, extension column; 41, piston; 42, one-way intake pipe; 43, one-way exhaust pipe; 44, round rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Referring to Figure 1 - Figure 6 , an automatic cutting device for machining a gearbox housing, including a base 1 in a U-shaped structure. The inner side wall of the base 1 is fixedly connected with a cross plate 2. The side wall of the cross plate 2 is fixedly connected with a motor 3. The output end of the motor 3 is fixedly connected with a main shaft 4. One end of the main shaft 4 is fixedly connected with a cam 5. The side wall of the cam 5 is fixedly connected with an arc-shaped guide plate 6. The arc-shaped guide plate 6 is an arc-shaped plate body and both ends are inclined plane structures. A plurality of sliding blocks 7 are slidably connected to the inner side wall of the base 1. A plurality of sliding blocks 7 are jointly fixedly connected with a rectangular frame 8. The inner side wall of the rectangular frame 8 is rotatably connected with a round shaft 14. The side wall of the round shaft 14 is fixedly connected with an upper L-shaped plate 16. A clockwork spring 15 is sleeved and fixedly connected to the side wall of the round shaft 14. The other end of the clockwork spring 15 is fixedly connected with the inner side wall of the rectangular frame 8. When the upper L-shaped plate 16 is only affected by the clockwork spring 15, it is in a state where one end is tilted upward. The side wall of the upper L-shaped plate 16 is rotatably connected with a round rod 44 (as Figure 4As shown, a friction wheel 19 is fixedly connected to the side wall of the round rod 44. The bottom wall of the upper L-shaped plate 16 is fixedly connected to the lower L-shaped plate 17. A cutting machine 18 is installed on the bottom wall of the lower L-shaped plate 17. A rectangular block 12 is fixedly connected to the inner side wall of the base 1. An L-shaped column 11 is fixedly connected to the top wall of the rectangular frame 8. The L-shaped column 11 penetrates and is slidably connected to the side wall of the rectangular block 12. A return spring 13 is sleeved and fixedly connected to the side wall of the L-shaped column 11. The other end of the return spring 13 is fixedly connected to the side wall of the rectangular block 12. A vertical plate 9 is fixedly connected to the top wall of the rectangular frame 8. A sliding rod 10 is fixedly connected to the side wall of the vertical plate 9.

[0031] A through hole 29 is formed in the top wall of the lower L-shaped plate 17 (as Figure 5 shown). A rack 28 is slidably connected to the top wall of the lower L-shaped plate 17. A driving shaft 22 penetrates and is rotatably connected to the top wall of the upper L-shaped plate 16. A side rod 25 is fixedly connected to the side wall of the driving shaft 22. A round pin 26 is fixedly connected to the bottom wall of the side rod 25. A driving frame 27 is fixedly connected to the top wall of the rack 28. The driving frame 27 has a rectangular outer frame structure. Mounting columns 30 are symmetrically and fixedly connected to the bottom wall of the rack 28. After passing through the through hole 29, the mounting columns 30 are fixedly connected to a grinding machine 31.

[0032] A matching rod 32 penetrates and is rotatably connected to the top wall of the lower L-shaped plate 17. An air jet seat 33 is fixedly connected to the bottom wall of the matching rod 32. A plurality of nozzles inclined downward are provided on the side wall of the air jet seat 33. A matching gear 34 is fixedly connected to the side wall of the matching rod 32.

[0033] A support plate 21 is fixedly connected to the inner side wall of the base 1. A second conical wheel 24 is rotatably connected to the top wall of the support plate 21. A telescopic universal coupling 23 is fixedly connected to the bottom wall of the second conical wheel 24. The telescopic universal coupling 23 is a prior art. The other end of the telescopic universal coupling 23 is fixedly connected to the driving shaft 22.

[0034] The round pin 26 is slidably connected to the inner side wall of the driving frame 27. The matching gear 34 is meshed with the rack 28. A first conical wheel 20 is fixedly connected to the side wall of the main shaft 4. The first conical wheel 20 is meshed with the second conical wheel 24.

[0035] One end of the round rod 44 is fixedly connected to a round plate 36. A circular rod 37 is eccentrically fixedly connected to the side wall of the round plate 36. A push rod 38 is rotatably connected to the side wall of the circular rod 37 with a dislocation. Two extension columns 40 are fixedly connected to the side wall of the upper L-shaped plate 16. The other end of each extension column 40 is fixedly connected to a box body 39. A piston 41 is hermetically and slidably connected to the inner wall of the box body 39.

[0036] A one-way intake pipe 42 and a one-way exhaust pipe 43 are fixedly connected to the inner wall of the box body 39. One end of the one-way exhaust pipe 43 away from the box body 39 is fixedly communicated with the air jet seat 33. The one-way intake pipe 42 only allows the outside air to enter the box body 39, and the one-way exhaust pipe 43 only allows the air in the box body 39 to enter the air jet seat 33 for circulation.

[0037] The cam 5 slides against the friction wheel 19 (as Figure 2 shown), and the sliding rod 10 slides against the arc-shaped guide plate 6 (as Figure 3 shown). Symmetrically fixed to the base 1 are placing seats 35. Inside the placing seats 35, an existing clamping mechanism is installed to stably clamp and fix the transmission housing, preventing the transmission housing from shaking during the processing.

[0038] In the present invention, the operator places two transmission housings with casting handles in the two placing seats 35, and they are clamped by the existing clamping mechanism. Then, the motor 3 is turned on. The output end of the motor 3 drives the main shaft 4 fixedly connected thereto to rotate. The main shaft 4 drives the cam 5 fixedly connected thereto to rotate. The cam 5 drives the arc-shaped guide plate 6 to rotate. When the arc-shaped guide plate 6 rotates, since the sliding rod 10 slides against the arc-shaped guide plate 6, the sliding rod 10 will slide along the inclined surface portion of the arc-shaped guide plate 6. The sliding rod 10 will drive the rectangular frame 8 and multiple sliding blocks 7 to slide synchronously to the left by a certain distance through the vertical plate 9 (as Figure 2 shown). At this time, the friction wheel 19 slides against the convex portion of the cam 5, so that the upper L-shaped plate 16 will be in a horizontal state. Then, the upper L-shaped plate 16 will drive the lower L-shaped plate 17 to move to the left by a certain distance synchronously, so that the circular saw part of the cutting machine 18 installed at the bottom of the lower L-shaped plate 17 cuts the casting handles on the two transmission housings simultaneously.

[0039] Then, two grinders 31 are turned on. During the rotation of the main shaft 4, the first conical wheel 20 fixedly connected to the side wall of the main shaft 4 will drive the second conical wheel 24 meshed therewith to rotate. The second conical wheel 24 drives the telescopic universal coupling 23 fixedly connected thereto to rotate. The telescopic universal coupling 23 is an existing technology. The telescopic universal coupling 23 utilizes the characteristics of its mechanism to enable the two shafts to rotate continuously while not being on the same axis and having an axis angle, and can reliably transmit torque and motion. Moreover, the telescopic universal coupling 23 can perform lengthwise telescopic transformation. Then, the telescopic universal coupling 23 will drive the drive shaft 22 to rotate. The drive shaft 22 will drive the side rod 25 fixedly connected to the side wall of its bottom end to rotate. The round pin 26 fixedly connected to the bottom wall of the side rod 25 will drive the drive frame 27 that slides against it to move. Since the drive frame 27 is in the structure of a rectangular outer frame, during the process of the round pin 26 sliding against the inside of the drive frame 27, it will drive the drive frame 27 to slide reciprocally in the horizontal direction. The drive frame 27 will drive the rack 28 fixedly connected thereto to move reciprocally in the horizontal direction. Then, the mounting columns 30 symmetrically fixed to the bottom wall of the rack 28 will drive the corresponding grinders 31 to move reciprocally in the horizontal direction, so that the grinding parts of the grinders 31 perform reciprocating grinding on the transmission housing just after cutting, improving the smoothness of the surface of the transmission housing.

[0040] During the rotation of the cam 5, due to the large frictional force between the surface of the friction wheel 19 and the cam 5 being rough, during the sliding contact between the friction wheel 19 and the cam 5, the friction wheel 19 will rotate under the action of the frictional force. Then the friction wheel 19 drives the round rod 44 to rotate, and the round rod 44 drives the round plate 36 fixedly connected to one end thereof to rotate, so that the circular rod 37 eccentrically fixedly connected to the side wall of the round plate 36 drives the two push rods 38 rotatably connected thereto to move. Then each push rod 38 will drive the piston 41 rotatably connected thereto to slide reciprocally in a sealed manner inside the corresponding box body 39. Since the two box bodies 39 are symmetrically arranged on both sides of the round plate 36, there will always be a piston 41 that sucks the external gas into the box body 39 through the one-way intake pipe 42 during the sealed sliding process, and the other piston 41 squeezes the gas inside the box body 39 into the nozzle head of the jet seat 33 through the one-way outlet pipe 43 during the sealed sliding process to form a continuous high-speed air flow. This part of the continuous high-speed air flow will blow away the waste chips generated during the cutting and grinding processes.

[0041] And during the process of forming a continuous high-speed air flow by the nozzle head in the jet seat 33, since the rack 28 continuously reciprocates horizontally, and the mating gear 34 is meshed with the rack 28, the rack 28 will drive the mating gear 34 to reciprocally rotate a certain angle in the forward and reverse directions. The mating gear 34 drives the mating rod 32 to reciprocally rotate synchronously. The mating rod 32 drives the jet seat 33 fixedly connected to its bottom end to reciprocally rotate a certain angle in the forward and reverse directions synchronously. Then the high-speed air flow ejected from the jet seat 33 will swing reciprocally at a certain angle (such as a 120-degree angle) and blow out, thereby increasing the cleaning range of the waste chips.

[0042] As Figure 2 shown, then when the sliding rod 10 moves to the end of the arc-shaped guide plate 6 away from the cam 5, at this time the sliding rod 10 no longer drives the rectangular frame 8 to move leftward through the vertical plate 9, and the cutting and grinding operations of the transmission housing are completed. Subsequently, the friction wheel 19 will contact and slide with the non-convex part of the cam 5. Then under the pulling force of the hairspring 15, the round shaft 14 will drive the upper L-shaped plate 16 to rotate upward by a certain angle, and the upper L-shaped plate 16 will drive the lower L-shaped plate 17 to rotate synchronously by a certain angle, so that the lower L-shaped plate 17 drives the cutting machine 18 and the grinding machine 31 to move obliquely upward by a certain distance away from the processed transmission housing. Finally, the sliding rod 10 will contact and slide with the inclined surface part on the other side of the arc-shaped guide plate 6. Then at this time, under the elastic force of the return spring 13, the rectangular frame 8 will move horizontally to the right by a certain distance, and then return to the initial state to wait for the next cutting processing operation.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. An automatic cutting device for machining a transmission housing, comprising a base (1) in a U-shaped structure, characterized in that, Inside the inner side wall of the base (1), a motor (3) is fixedly connected through a cross plate (2). The output end of the motor (3) is fixedly connected with a main shaft (4). One end of the main shaft (4) is fixedly connected with a cam (5). The side wall of the cam (5) is fixedly connected with an arc-shaped guide plate (6). The inner side wall of the base (1) is slidably connected with a rectangular frame (8) through a plurality of sliding blocks (7). The inner side wall of the rectangular frame (8) is rotatably connected with an upper L-shaped plate (16) through a round shaft (14). The round shaft (14) is elastically connected with the inner side wall of the rectangular frame (8) through a hairspring (15). The side wall of the upper L-shaped plate (16) is rotatably connected with a friction wheel (19) through a round rod (44). The bottom wall of the upper L-shaped plate (16) is fixedly connected with a lower L-shaped plate (17). A cutting machine (18) is installed on the bottom wall of the lower L-shaped plate (17). The inner side wall of the base (1) is fixedly connected with a rectangular block (12). The top wall of the rectangular frame (8) is fixedly connected with an L-shaped column (11). The L-shaped column (11) is slidably connected through the side wall of the rectangular block (12). The L-shaped column (11) is elastically connected with the side wall of the rectangular block (12) through a return spring (13). The top wall of the rectangular frame (8) is fixedly connected with a sliding rod (10) through a vertical plate (9). A through hole (29) is opened on the top wall of the lower L-shaped plate (17). A rack (28) is slidably connected to the top wall of the lower L-shaped plate (17). The top wall of the upper L-shaped plate (16) is rotatably connected through a driving shaft (22). A side rod (25) is fixedly connected to the side wall of the driving shaft (22). A round pin (26) is fixedly connected to the bottom wall of the side rod (25). A driving frame (27) is fixedly connected to the top wall of the rack (28). The driving frame (27) has a rectangular structure. Mounting columns (30) are symmetrically fixedly connected to the bottom wall of the rack (28). After passing through the through hole (29), the mounting columns (30) are fixedly connected with a grinding machine (31). A matching rod (32) is rotatably connected through the top wall of the lower L-shaped plate (17). An air jet seat (33) is fixedly connected to the bottom wall of the matching rod (32). A matching gear (34) is fixedly connected to the side wall of the matching rod (32). A support plate (21) is fixedly connected to the inner side wall of the base (1). A second conical wheel (24) is rotatably connected to the top wall of the support plate (21). A telescopic universal coupling (23) is fixedly connected to the bottom wall of the second conical wheel (24). The other end of the telescopic universal coupling (23) is fixedly connected with the driving shaft (22). The round pin (26) is slidably connected with the inner side wall of the driving frame (27). The matching gear (34) is meshed with the rack (28). A first conical wheel (20) is fixedly connected to the side wall of the main shaft (4). The first conical wheel (20) is meshed with the second conical wheel (24).One end of the round rod (44) is fixedly connected with a round plate (36). An eccentric circular rod (37) is fixedly connected to the side wall of the round plate (36). A push rod (38) is rotatably connected to the side wall of the circular rod (37) with a dislocation. Two extension columns (40) are fixedly connected to the side wall of the upper L-shaped plate (16). The other end of each extension column (40) is fixedly connected with a box body (39). A piston (41) is hermetically slidably connected to the inner wall of the box body (39). A one-way intake pipe (42) and a one-way exhaust pipe (43) are fixedly connected through the inner wall of the box body (39). One end of the one-way exhaust pipe (43) away from the box body (39) is fixedly communicated with the jet seat (33). The cam (5) and the friction wheel (19) are in contact and slide against each other. The sliding rod (10) and the arc-shaped guide plate (6) are in contact and slide against each other., 2. The automatic cutting device for machining a gearbox housing according to claim 1, wherein, The placing seats (35) are symmetrically and fixedly connected to the base (1).

Images