Near-net forming process for automobile transmission gear

Abstract

The invention discloses an automobile transmission gear near-net forming process and relates to the technical field of automobile transmission gear machining. A cutting mechanism comprises a workbench, an open groove is formed in the top of the workbench, a supporting ring is fixedly connected to the position, close to the left side, of the top of the workbench, and an annular groove is formed in the top of the supporting ring; four movable blocks are movably connected to an inner cavity of the annular groove, adjusting rods are fixedly connected to the tops of the movable blocks, and through mutual cooperation of a swing plate, a first limiting ring, a laser cutter, a connecting rectangular frame and other structures, raw materials can be placed on one side of the workbench and the swing plate, the raw materials are pushed, and the work efficiency is improved. When the raw materials move to the bottoms of the laser cutters, the laser cutters are taken out and placed in the adjacent through holes, the positions of different sizes are selected, then the connecting rectangular frame is rotated, the connecting rectangular frame drives the laser cutters to rotate, and the laser cutters cut the raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of automobile gearbox gear processing, in particular to a near-net-shape forming process for automobile gearbox gears. Background Art

[0002] The automobile gearbox, also known as the automobile transmission, is a vital component in the automobile transmission system. In the automobile gearbox, the gears are adjusted by different combinations and switching to achieve the adjustment of vehicle driving speed and power. At this time, the automobile gearbox gear needs to be processed by near-net forming process. In the existing technology, the near-net forming forging process of gearbox gears can improve material utilization, reduce processing allowance, improve production efficiency and product quality. It is an advanced gear manufacturing technology. In actual production, the appropriate forging process and equipment should be selected according to the specific requirements and production conditions of the gears to ensure the quality and performance of the gears.

[0003] However, there are some problems in the processing of existing automobile gearbox gears. It is not convenient to cut the raw materials into different sizes during the processing of existing gears, which may affect the subsequent processing efficiency of the gears. After the raw materials are cut, they need to be heated. After the heating is completed, it is not convenient to unload the raw materials, which will increase the workload of the operators. At the same time, it is not convenient to forge gear raw materials of different sizes. The forging position in the prior art is relatively fixed. If the gear mold is frequently taken, the working efficiency of the device will be reduced. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a near-net forming process for automobile transmission gears, which can facilitate the cutting of raw materials of different sizes. After the raw materials are heated, it is easy to cut the raw materials and forge raw materials of different sizes.

[0005] To achieve the above object, the present invention provides the following technical solution: a near-net-shape forming process for automobile gearbox gears, comprising the following steps:

[0006] Step 1: Place the gear raw material under the cutting mechanism, and the cutting mechanism cuts the gear raw material;

[0007] Step 2: The cut raw material slides into the heating mechanism, and the heating mechanism heats the cut raw material and discharges it;

[0008] Step 3: Place raw materials of different sizes into adjacent molds and forge them to facilitate subsequent operations.

[0009] Preferably, the cutting mechanism includes a workbench, a groove is provided on the top of the workbench, a support ring is fixedly connected to the top of the workbench near the left side, an annular groove is provided on the top of the support ring, four movable blocks are movably connected to the inner cavity of the annular groove, the tops of the movable blocks are fixedly connected to adjusting rods, the ends of the adjusting rods away from the movable blocks are fixedly connected to connecting rectangular frames, the inner cavities of the four connecting rectangular frames are commonly provided with a first limiting ring, a second limiting ring and a third limiting ring, the inner cavities of the connecting rectangular frames are fixedly connected to a number of fixing plates, three through holes are provided on the top and bottom of the connecting rectangular frames, adjacent sides of two adjacent connecting rectangular frames are commonly fixedly connected with an arc rod, a handle is fixedly connected to the right side of the connecting rectangular frame on the right side, a laser cutter is provided on the top of the connecting rectangular frame on the right side, and the bottom end of the laser cutter passes through two adjacent through holes.

[0010] Preferably, the heating mechanism includes a heating furnace, a vertical groove is provided near the center of the bottom of the groove, a connecting groove is provided near the right side of the bottom of the groove, the vertical groove and the connecting groove are mutually connected, through grooves are provided near the center on both sides of the front and rear of the workbench, the through grooves and the vertical grooves are mutually connected, the heating furnace is located in the inner cavities of the two through grooves and the vertical grooves, limiting rectangular frames are provided on both sides of the front and rear of the heating furnace, four adjustment plates are fixedly connected to the outer edges of the limiting rectangular frames, the inner cavities of the adjustment plates are provided with first threaded holes, and the front and rear sides of the workbench are provided with through grooves. Four second threaded holes are provided on both sides, and bolts are threadedly connected to the inner cavities of the adjacent first threaded holes and second threaded holes. Two limiting elastic plates are fixedly connected to the side of the limiting rectangular frame away from the heating furnace. A movable door is provided on the top of the heating furnace. Two first hinges are provided on the top of the heating furnace near the right side. The movable door is movably connected to the top of the heating furnace through the first hinges. Limiting grooves are provided on the front and rear sides of the workbench near the top, and a horizontal plate is passed through the inner cavities of the two limiting grooves. Two baffles are fixedly connected to the right side of the inner cavity of the heating furnace.

[0011] Preferably, a plurality of gear molds of different sizes are fixedly connected to the bottom of the connecting groove, slide grooves are provided on both the front and rear sides of the workbench near the right side, sliders are movably connected to the inner cavities of the slide grooves, and an L-shaped plate is fixedly connected to the side of the slider away from the workbench, a connecting frame is provided at the top of the workbench near the right side, the top of the connecting frame is open, two fixed elastic plates are fixedly connected to the inner cavity of the connecting frame near the top, and adjustment holes are provided on the side of the inner cavity of the L-shaped plate away from the slider, a motor is provided on the front side of the connecting frame, a transmission rod is fixedly connected to the power output shaft of the motor, a rear end of the transmission rod passes through adjacent adjustment holes and is fixedly connected to the front side of the connecting frame, a connecting rod is fixedly connected to the rear side of the connecting frame, and a fixed disk is fixedly connected to the rear end of the connecting rod.

[0012] Preferably, two T-slots are provided on the top of the workbench near the right side, the inner cavities of the T-slots are movably connected with T-blocks, the tops of the T-blocks are fixedly connected with cylinders, the inner cavities of the two cylinders are jointly provided with a U-shaped rod, a round tube is sleeved at the center of the outer edge of the U-shaped rod, the bottom of the round tube is fixedly connected with a vertical rod, the bottom end of the vertical rod is fixedly connected with a press, the bottom of the press is fixedly connected with a threaded barrel, the inner cavity of the threaded barrel is threadedly connected with a threaded rod, the bottom end of the threaded rod is fixedly connected with a fixing column, and the bottom end of the fixing column is fixedly connected with a pressing plate.

[0013] Preferably, a handle is fixedly connected to the right side of the movable door near the top, and a U-shaped plate is sleeved on the outer edge of the handle. An elastic rope is fixedly connected to the bottom of the U-shaped plate, and one end of the elastic rope away from the U-shaped plate is sleeved on the outer edge of the horizontal plate and fixedly connected to an elastic ring, which is sleeved on the outer edge of the elastic rope.

[0014] Preferably, two movable grooves are provided on the front and rear sides of the workbench, and the inner cavities of the movable grooves are movably connected with movable blocks. Two adjacent movable blocks are commonly fixedly connected with a connecting elastic plate on the side away from the workbench, and the two connecting elastic plates are respectively located on the front and rear sides of the cross plate.

[0015] Preferably, a swing plate is provided on the left side of the workbench, and two second hinges are provided at the bottom of the swing plate near the right side. The swing plate is movably connected to the left side of the workbench through the second hinge. A transverse groove is provided at the left side of the workbench near the bottom, and an adjustment block is movably connected to the inner cavity of the transverse groove. An L-shaped rod is fixedly connected to the left side of the adjustment block, and a support plate is fixedly connected to the end of the L-shaped rod away from the adjustment block, and the support plate is located at the bottom of the swing plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can realize placing the raw material on one side of the workbench and the swing plate through the mutual cooperation between the swing plate, the first limiting ring, the laser cutter, the connecting rectangular frame and other structures, pushing the raw material, and when the raw material moves to the bottom of the laser cutter, taking out the laser cutter, placing the laser cutter in the adjacent through hole, selecting positions of different sizes, and then rotating the connecting rectangular frame, the connecting rectangular frame drives the laser cutter to rotate, and the laser cutter cuts the raw material;

[0018] Through the mutual cooperation among the heating furnace, connecting frame, press, motor and other structures, the cut gear raw material can be dropped into the heating furnace, the movable door is merged, the heating furnace is started, and the heating furnace heats the gear raw material. After the heating is completed, the limiting rectangular frame is taken out, the heating furnace is taken out from the inside of the workbench, and the heating furnace is placed inside the connecting frame. The motor drives the connecting frame to rotate, and the connecting frame drives the heating furnace to rotate. The gear raw material inside the heating furnace falls on the gear mold, the position of the gear raw material is adjusted, and it is placed in a matching gear mold, the U-shaped rod is moved left and right, and the press is started. The press forges the gear raw material through the pressing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the swing plate component of the present invention;

[0021] Figure 3 A bottom view of the component workbench of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the component press of the present invention;

[0023] Figure 5 This is a schematic diagram of the U-shaped rod structure of the component of the present invention;

[0024] Figure 6 This is a schematic diagram of the component connection frame structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the connecting rod structure of the component of the present invention;

[0026] Figure 8 This is an exploded view of the laser cutter component of the present invention;

[0027] Fig. 9 This is a schematic diagram of a rectangular frame structure in which components of the present invention are connected;

[0028] Fig.10 It is an exploded view of the heating furnace of the component of the present invention;

[0029] Fig.11 This is a schematic diagram of the cross plate structure of the component of the present invention;

[0030] Fig.12 It is a cross-sectional view of a component workbench of the present invention;

[0031] Fig.13 This is a schematic diagram of the L-shaped rod structure of the component of the present invention;

[0032] Fig.14 This is a flow chart of the near-net-shape forming process steps for gearbox gears.

[0033] Numbers in the figure: 1, workbench; 2, swing plate; 3, connecting frame; 4, U-shaped rod; 5, round tube; 6, L-shaped plate; 7, laser cutter; 8, threaded cylinder; 9, threaded rod; 10, fixed column; 11, pressing plate; 12, cylinder; 13, T-block; 14, fixed elastic plate; 15, motor; 16, transmission rod; 17, slider; 18, connecting rod; 19, fixed plate; 20, arc rod; 21, first limiting ring; 22, second limiting ring; 23, third limiting ring; 24, connecting rectangular frame; 25 , support ring; 26, fixed plate; 27, grip; 28, adjustment rod; 29, movable block; 30, heating furnace; 31, horizontal plate; 32, connecting elastic plate; 33, limiting rectangular frame; 34, adjustment plate; 35, bolt; 36, limiting elastic plate; 37, movable door; 38, baffle; 39, handle; 40, U-shaped plate; 41, elastic rope; 42, elastic ring; 43, moving block; 44, gear mold; 45, adjustment block; 46, L-shaped rod; 47, support plate; 48, vertical rod; 49, press. DETAILED DESCRIPTION

[0034] Embodiment 1:

[0035] See also Figure 1-3 , Figure 8-9 , Figure 13-14 The present invention provides a technical solution: a near-net-shape forming process for automobile gearbox gears, comprising the following steps:

[0036] Step 1: Place the gear raw material under the cutting mechanism, and the cutting mechanism cuts the gear raw material;

[0037] Step 2: The cut raw material slides into the heating mechanism, and the heating mechanism heats the cut raw material and discharges it;

[0038] Step 3: Place raw materials of different sizes into adjacent molds and forge them to facilitate subsequent operations.

[0039] The cutting mechanism includes a workbench 1, a slot is provided on the top of the workbench 1, a support ring 25 is fixedly connected to the top of the workbench 1 near the left side, an annular groove is provided on the top of the support ring 25, four movable blocks 29 are movably connected to the inner cavity of the annular groove, the top of the movable blocks 29 are fixedly connected to the adjusting rods 28, the ends of the adjusting rods 28 away from the movable blocks 29 are fixedly connected to the connecting rectangular frames 24, the inner cavities of the four connecting rectangular frames 24 are jointly provided with a first limiting ring 21, a second limiting ring 22 and a third limiting ring 23, the inner cavities of the connecting rectangular frames 24 are fixedly connected to a plurality of fixing plates 26, the top and bottom of the connecting rectangular frames 24 are provided with three through holes, and two adjacent connecting rectangular frames 24 are adjacent A curved rod 20 is fixedly connected to one side, a handle 27 is fixedly connected to the right side of the right connecting rectangular frame 24, a laser cutter 7 is arranged on the top of the right connecting rectangular frame 24, and the bottom end of the laser cutter 7 passes through two adjacent through holes, a swing plate 2 is arranged on the left side of the workbench 1, and two second hinges are arranged at the bottom of the swing plate 2 near the right side, and the swing plate 2 is movably connected to the left side of the workbench 1 through the second hinge, and a transverse groove is opened at the left side of the workbench 1 near the bottom, and an adjusting block 45 is movably connected to the inner cavity of the transverse groove, and an L-shaped rod 46 is fixedly connected to the left side of the adjusting block 45, and a support plate 47 is fixedly connected to the end of the L-shaped rod 46 away from the adjusting block 45, and the support plate 47 is located at the bottom of the swing plate 2;

[0040] Place the raw material on one side of the workbench 1 and the swing plate 2, push the raw material, and when the raw material moves to the bottom of the laser cutter 7, take out the laser cutter 7, place the laser cutter 7 in the adjacent through holes, select positions of different sizes, and then rotate the connecting rectangular frame 24, the connecting rectangular frame 24 drives the laser cutter 7 to rotate, and the laser cutter 7 cuts the raw material.

[0041] For further information, please refer to Figure 1-2 , Figure 4-7 , Figure 10-12The heating mechanism includes a heating furnace 30, a vertical groove is provided near the center of the bottom of the groove, a connecting groove is provided near the right side of the bottom of the groove, the vertical groove and the connecting groove are mutually connected, and through grooves are provided near the center of the front and rear sides of the workbench 1, and the through grooves and the vertical grooves are mutually connected. The heating furnace 30 is located in the inner cavity of the two through grooves and the vertical grooves, and the front and rear sides of the heating furnace 30 are provided with limiting rectangular frames 33, and the outer edges of the limiting rectangular frames 33 are fixedly connected to four adjustment plates 34, and the inner cavities of the adjustment plates 34 are provided with first threaded holes, and the front and rear sides of the workbench 1 are provided with four second The threaded hole, the adjacent first threaded hole and the second threaded hole inner cavity are threadedly connected with bolts 35, the limiting rectangular frame 33 is fixedly connected to the side away from the heating furnace 30 with two limiting elastic plates 36, the top of the heating furnace 30 is provided with a movable door 37, the top of the heating furnace 30 is provided with two first hinges near the right side, the movable door 37 is movably connected to the top of the heating furnace 30 through the first hinge, the front and rear sides of the workbench 1 are provided with limiting grooves near the top, the two limiting grooves are penetrated by a horizontal plate 31, and the right side of the inner cavity of the heating furnace 30 is fixedly connected with two baffles 38;

[0042] A number of gear molds 44 of different sizes are fixedly connected to the bottom of the connecting groove, and slide grooves are provided at the front and rear sides of the workbench 1 near the right side. The inner cavity of the slide grooves is movably connected with a slider 17, and the side of the slider 17 away from the workbench 1 is fixedly connected with an L-shaped plate 6. A connecting frame 3 is provided at the top of the workbench 1 near the right side, and the top of the connecting frame 3 is opened. Two fixed elastic plates 14 are fixedly connected to the inner cavity of the connecting frame 3 near the top, and an adjustment hole is provided on the side of the inner cavity of the L-shaped plate 6 away from the slider 17. A motor 15 is provided on the front side of the connecting frame 3, and a transmission rod 16 is fixedly connected to the power output shaft of the motor 15. The rear end of the transmission rod 16 passes through the adjacent adjustment holes and is fixedly connected to the front side of the connecting frame 3. A connecting rod 18 is fixedly connected to the rear side of the connecting frame 3, and a fixed plate 19 is fixedly connected to the rear end of the connecting rod 18. Two T-slots are provided at the top of the workbench 1 near the right side, and the inner cavities of the T-slots are movably connected with T-blocks 13. The tops of the T-blocks 13 are fixedly connected with cylinders 12, and the inner cavities of the two cylinders 12 are jointly provided with A U-shaped rod 4, a round tube 5 is sleeved at the center of the outer edge of the U-shaped rod 4, a vertical rod 48 is fixedly connected to the bottom of the round tube 5, a press 49 is fixedly connected to the bottom of the press 49, a threaded cylinder 8 is fixedly connected to the inner cavity of the threaded cylinder 8, a threaded rod 9 is threadedly connected to the bottom of the threaded rod 9, a fixed column 10 is fixedly connected to the bottom of the threaded rod 9, and a pressing plate 11 is fixedly connected to the bottom of the fixed column 10, a handle 39 is fixedly connected to the right side of the movable door 37 near the top, a U-shaped plate 40 is sleeved on the outer edge of the handle 39, an elastic rope 41 is fixedly connected to the bottom of the U-shaped plate 40, an end of the elastic rope 41 away from the U-shaped plate 40 is sleeved on the outer edge of the horizontal plate 31, and is fixedly connected to an elastic ring 42, and the elastic ring 42 is sleeved on the outer edge of the elastic rope 41, two moving grooves are provided on the front and rear sides of the workbench 1, and the inner cavity of the moving groove is movably connected to a moving block 43, and two adjacent moving blocks 43 are fixedly connected to a connecting elastic plate 32 on the side away from the workbench 1, and the two connecting elastic plates 32 are respectively located on the front and rear sides of the horizontal plate 31;

[0043] The cut gear raw material falls into the heating furnace 30, the movable door 37 is merged, the heating furnace 30 is started, and the heating furnace 30 heats the gear raw material. After the heating is completed, the limiting rectangular frame 33 is taken out, the heating furnace 30 is taken out from the inside of the workbench 1, and the heating furnace 30 is placed in the connecting frame 3. The motor 15 drives the connecting frame 3 to rotate, and the connecting frame 3 drives the heating furnace 30 to rotate. The gear raw material inside the heating furnace 30 falls on the gear mold 44, the position of the gear raw material is adjusted, and it is placed in the gear mold 44 that matches each other, the U-shaped rod 4 is moved left and right, and the press 49 is started. The press 49 forges the gear raw material by pressing the plate 11;

[0044] Embodiment 2:

[0045] The process steps of gearbox gear near net forming are as follows:

[0046] S1: Raw material preparation, select suitable gear steel materials, such as 20CrMnTi, 20CrMo and other alloy structural steels, ensure that the materials have good strength, toughness and wear resistance, and inspect the raw materials to ensure that their chemical composition, hardness and other indicators meet the requirements;

[0047] S2: Cutting: According to the size and weight requirements of the gear, the raw materials are cut into appropriate billet sizes by shearing, sawing or flame cutting. The cutting size should take into account the machining allowance and shrinkage rate during the forging process;

[0048] S3: Heating: Heat the blank to a suitable forging temperature range. The initial forging temperature of gear steel is between 1150℃ and 1200℃, and the final forging temperature is not less than 800℃. The heating process should be uniform to avoid local overheating or overburning, which will affect the performance of the material.

[0049] S4: Blank making, using upsetting, drawing and other blank making processes to make the blank initially form the general shape of the gear, in preparation for the subsequent forging process. During the blank making process, attention should be paid to controlling the size and shape of the blank to ensure that it meets the forging process requirements;

[0050] S5: Pre-forging. In the pre-forging die, the blank is preliminarily forged to make the metal material flow and distribute further, close to the final shape of the gear. However, the gear after pre-forging still has a certain processing allowance. The design of the pre-forging die should take into account the shape, size and forging process requirements of the gear to ensure that the shape and size of the gear after pre-forging are accurate and reasonable.

[0051] S6: Final forging: put the pre-forged billet into the final forging die for final forging to make the shape and size of the gear meet the design requirements. The precision and surface quality of the final forging die are crucial to the quality of the gear. Therefore, the die should be precision machined and heat treated to improve its hardness, wear resistance and service life. During the final forging process, parameters such as forging pressure, speed and temperature should be controlled to ensure stable quality of the gear.

[0052] S7: Punching. For gears with center holes or other holes, punching operations may be required during the forging process. Punching can be done using equipment such as a punch press or a press to ensure that the position and size of the hole are accurate.

[0053] S8: Cooling: Use appropriate cooling methods, such as air cooling, wind cooling or oil cooling, to cool the forged gears. The cooling rate should be controlled according to the material and size of the gears to avoid cracks or other defects.

[0054] S9: Heat treatment. According to the performance requirements of the gears, the forged gears are subjected to appropriate heat treatment, such as normalizing, tempering, carburizing and quenching. Heat treatment can improve the hardness, strength and wear resistance of the gears and improve their comprehensive performance.

[0055] S10: Cleaning and inspection: clean the cooled gears to remove impurities such as oxide scale and oil stains on the surface, and then conduct inspections, including testing of dimensional accuracy, surface quality, hardness and other indicators to ensure that the gears meet the design requirements and quality standards.

[0056] Working principle: When the device starts working, the operator first adjusts the swing plate 2 to a horizontal state, and then moves the L-shaped rod 46. The L-shaped rod 46 drives the adjustment block 45 to move, and the L-shaped rod 46 drives the support plate 47 to move, and moves the support plate 47 to the bottom of the swing plate 2, so as to support the swing plate 2. Then, the gear raw material is placed on the top of the swing plate 2, and the gear raw material is pushed. The gear raw material is pushed under the laser cutter 7. The operator picks up the laser cutter 7 and selects the position of different holes on the connecting rectangular frame 24 according to the required gear size. The position of the holes on the connecting rectangular frame 24 can be adjusted according to the actual situation. When the laser cutter 7 is placed After completion, the laser cutter 7 is powered on, the operator holds the handle 27, the handle 27 drives the connecting rectangular frame 24 to rotate, the connecting rectangular frame 24 drives the arc rod 20 to rotate, the connecting rectangular frame 24 drives the laser cutter 7 to rotate, the connecting rectangular frame 24 drives the adjusting rod 28 to rotate, the adjusting rod 28 drives the movable block 29 to rotate, the laser cutter 7 cuts the gear raw material, and the cut raw material falls into the heating furnace 30, then the operator takes out the U-shaped plate 40, merges the movable door 37, starts the heating furnace 30, and the heating furnace 30 heats the gear raw material inside. After the heating is completed, the operator turns the bolt 35 and takes the bolt 35 out of the adjusting plate 34 , take out the limiting rectangular frame 33 from the front and rear sides of the heating furnace 30, take out the heating furnace 30 from the inside of the workbench 1 through external equipment, place the heating furnace 30 inside the connecting frame 3, fix the elastic plate 14 to limit the connecting frame 3, the operator moves the L-shaped plate 6 left and right, the L-shaped plate 6 drives the slider 17 to move, the L-shaped plate 6 drives the connecting frame 3 to move left and right through the transmission rod 16 and the connecting rod 18, start the motor 15 through the external power supply, the motor 15 drives the transmission rod 16 to rotate, the transmission rod 16 drives the connecting frame 3 to rotate 180 degrees, the connecting frame 3 drives the heating furnace 30 to rotate, the feed port of the heating furnace 30 is facing downward, and the gear raw material inside the heating furnace 30 falls on the gear mold 4 4, and then the gear raw material is adjusted and placed inside the adjacent matching gear mold 44. The operator moves the U-shaped rod 4 left and right. The U-shaped rod 4 drives the T-block 13 to move through the cylinder 12. The U-shaped rod 4 drives the press 49 to move through the round tube 5 and the vertical rod 48. The press 49 is started. The press 49 drives the threaded rod 9, the fixed column 10 and the pressing plate 11 to move downward through the threaded cylinder 8. The pressing plate 11 forges the gear raw material inside the adjacent gear mold 44. The size of the pressing plate 11 can be changed according to the size of different gear molds 44. It only needs to rotate the threaded rod 9 and take the threaded rod 9 out of the threaded cylinder 8 to change the size of the pressing plate 11, thereby facilitating subsequent processing operations.

Claims

1. A near-net-shape forming process for automobile gearbox gears, characterized in that: The following steps are involved: Step 1: Place the gear raw material under the cutting mechanism, and the cutting mechanism cuts the gear raw material; Step 2: The cut raw material slides into the heating mechanism, and the heating mechanism heats the cut raw material and discharges it; Step 3: Place raw materials of different sizes into adjacent molds and forge them to facilitate subsequent operations.

2. The near-net-shape forming process for automobile transmission gear according to claim 1, characterized in that: The cutting mechanism comprises a workbench (1), the top of the workbench (1) is provided with a slot, a support ring (25) is fixedly connected to the top of the workbench (1) near the left side, the top of the support ring (25) is provided with an annular groove, the inner cavity of the annular groove is movably connected with four movable blocks (29), the tops of the movable blocks (29) are all fixedly connected with adjustment rods (28), the ends of the adjustment rods (28) away from the movable blocks (29) are all fixedly connected with connecting rectangular frames (24), and the inner cavities of the four connecting rectangular frames (24) are jointly provided with a first limiting ring (21), The second limiting ring (22) and the third limiting ring (23), the inner cavity of the connecting rectangular frame (24) are fixedly connected to a plurality of fixing plates (26), the top and bottom of the connecting rectangular frame (24) are provided with three through holes, the adjacent sides of two adjacent connecting rectangular frames (24) are fixedly connected to an arc rod (20), the right side of the connecting rectangular frame (24) on the right side is fixedly connected to a handle (27), and the top of the connecting rectangular frame (24) on the right side is provided with a laser cutter (7), and the bottom end of the laser cutter (7) passes through two adjacent through holes.

3. The near-net-shape forming process for automobile transmission gear according to claim 1, characterized in that: The heating mechanism comprises a heating furnace (30), a vertical groove is provided near the center of the bottom of the groove, a connecting groove is provided near the right side of the bottom of the groove, the vertical groove and the connecting groove are mutually connected, the front and rear sides of the workbench (1) are both provided with through grooves near the center, the through grooves and the vertical grooves are mutually connected, the heating furnace (30) is located in the inner cavities of the two through grooves and the vertical grooves, the front and rear sides of the heating furnace (30) are both provided with limiting rectangular frames (33), the outer edges of the limiting rectangular frames (33) are both fixedly connected with four adjustment plates (34), the inner cavities of the adjustment plates (34) are both provided with first threaded holes, and the front and rear sides of the workbench (1) are both provided with four second threaded holes. The first threaded hole and the second threaded hole are adjacent to each other and are connected by bolts (35) through threads. Two elastic limit plates (36) are fixedly connected to the side of the limit rectangular frame (33) away from the heating furnace (30). A movable door (37) is provided on the top of the heating furnace (30). Two first hinges are provided on the top of the heating furnace (30) near the right side. The movable door (37) is movably connected to the top of the heating furnace (30) through the first hinges. Limiting grooves are provided on the front and rear sides of the workbench (1) near the top. A horizontal plate (31) is passed through the inner cavities of the two limit grooves. Two baffles (38) are fixedly connected to the right side of the inner cavity of the heating furnace (30).

4. The near-net-shape forming process for automobile transmission gear according to claim 3, characterized in that: A plurality of gear molds (44) of different sizes are fixedly connected to the bottom of the connecting groove; sliding grooves are provided on both the front and rear sides of the workbench (1) near the right side; the inner cavities of the sliding grooves are movably connected to sliders (17); the side of the slider (17) away from the workbench (1) is fixedly connected to an L-shaped plate (6); a connecting frame (3) is provided on the top of the workbench (1) near the right side; the top of the connecting frame (3) is open; two fixed elastic plates (14) are fixedly connected to the inner cavity of the connecting frame (3) near the top; an adjustment hole is provided on the inner cavity of the L-shaped plate (6) away from the slider (17); a motor (15) is provided on the front side of the connecting frame (3); a transmission rod (16) is fixedly connected to the power output shaft of the motor (15); the rear end of the transmission rod (16) passes through adjacent adjustment holes and is fixedly connected to the front side of the connecting frame (3); a connecting rod (18) is fixedly connected to the rear side of the connecting frame (3); and a fixed disk (19) is fixedly connected to the rear end of the connecting rod (18).

5. The near-net-shape forming process for automobile transmission gear according to claim 2, characterized in that: Two T-shaped slots are provided near the right side of the top of the workbench (1), and the inner cavities of the T-shaped slots are movably connected to T-shaped blocks (13), and the tops of the T-shaped blocks (13) are fixedly connected to cylinders (12). The inner cavities of the two cylinders (12) are jointly provided with a U-shaped rod (4), and a round tube (5) is sleeved at the center of the outer edge of the U-shaped rod (4), and the bottom of the round tube (5) is fixedly connected to a vertical rod (48), and the bottom end of the vertical rod (48) is fixedly connected to a press (49), and the bottom of the press (49) is fixedly connected to a threaded cylinder (8), and the inner cavity of the threaded cylinder (8) is threadedly connected to a threaded rod (9), and the bottom end of the threaded rod (9) is fixedly connected to a fixed column (10), and the bottom end of the fixed column (10) is fixedly connected to a pressing plate (11).

6. The near-net-shape forming process for automobile transmission gear according to claim 3, characterized in that: A handle (39) is fixedly connected to the right side of the movable door (37) near the top, and a U-shaped plate (40) is sleeved on the outer edge of the handle (39). An elastic rope (41) is fixedly connected to the bottom of the U-shaped plate (40). One end of the elastic rope (41) away from the U-shaped plate (40) is sleeved on the outer edge of the horizontal plate (31) and fixedly connected to an elastic ring (42). The elastic ring (42) is sleeved on the outer edge of the elastic rope (41).

7. The near-net-shape forming process for automobile transmission gear according to claim 3, characterized in that: Two movable grooves are provided on both the front and rear sides of the workbench (1), and the inner cavities of the movable grooves are movably connected to movable blocks (43). Two adjacent movable blocks (43) are fixedly connected to a connecting elastic plate (32) on the side away from the workbench (1), and the two connecting elastic plates (32) are respectively located on the front and rear sides of the transverse plate (31).

8. The near-net-shape forming process for automobile transmission gear according to claim 2, characterized in that: A swing plate (2) is provided on the left side of the workbench (1), and two second hinges are provided at the bottom of the swing plate (2) near the right side. The swing plate (2) is movably connected to the left side of the workbench (1) through the second hinges. A transverse groove is provided on the left side of the workbench (1) near the bottom, and an adjustment block (45) is movably connected to the inner cavity of the transverse groove. An L-shaped rod (46) is fixedly connected to the left side of the adjustment block (45), and a support plate (47) is fixedly connected to one end of the L-shaped rod (46) away from the adjustment block (45), and the support plate (47) is located at the bottom of the swing plate (2).

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