Surface treatment device for gear machining

Abstract

The application discloses a surface treatment device for gear machining, and belongs to the technical field of gear machining, which comprises a main mechanism for surface heat treatment of machining gears, four rotating gear mechanisms for driving the machining gears to rotate and a material changing mechanism for taking out the machining gears after treatment and putting the next batch of machining gears to be treated. The rotating gear mechanism and the liftable placing column work cooperatively to accurately lift the gear and drive it to rotate at high speed and stability at the heating and cooling stations, so that the tooth surface, tooth root and end face of the gear can be exposed to the induction field of the high-frequency heating coil and the spraying range of the cooling liquid, the dead angles of heating and cooling caused by static or local shielding are reduced, the hardening layer depth and the uniformity of the gear are improved, the traditional defects such as soft point and deformation are effectively avoided, and the comprehensive performance of the gear such as surface hardness, wear resistance and fatigue strength is improved.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, and in particular to a surface treatment apparatus for gear processing. Background Technology

[0002] As a key component of mechanical transmission, the surface properties of gears, such as hardness and wear resistance, directly determine the load-bearing capacity and service life of the entire machine. To improve these properties, high-frequency induction hardening is a key heat treatment process widely used in the gear manufacturing industry. However, traditional gear surface treatment equipment usually has significant technical shortcomings: low automation, reliance on manual loading and unloading, limiting production efficiency and safety; poor uniformity of heating and cooling processes, with gears often stationary or simply clamped, leading to uneven heating and cooling of the tooth surface, easily causing soft spots and deformation; dispersed functional units with low integration and discontinuous process flow; and the lack of an effective coolant circulation and recovery system, resulting in resource waste.

[0003] Existing equipment also has defects in gear clamping and positioning. It is difficult to quickly and reliably lift the gear off the support surface and drive it to rotate stably at the heat treatment station. This causes the contact surface between the gear and the bracket to be blocked during heating and spray cooling, forming a heat treatment blind zone, which seriously affects the uniformity and consistency of the final processing quality. Therefore, the gear manufacturing industry urgently needs an integrated special equipment that can realize fully automated loading and unloading, precise control of the heat treatment process, and ensure that the gear is heated and cooled uniformly in all directions.

[0004] To address the aforementioned industry pain points, the development of a novel surface treatment device for gear processing is particularly necessary. This device aims to organically combine functional modules such as material changing, rotary lifting, induction heating, and spray cooling through a highly integrated automated design, thereby solving the core problems of low efficiency and uneven quality in traditional processes, and significantly improving the surface treatment quality of gears and the overall efficiency of the production line. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention adopts the following technical solution: a surface treatment device for gear processing, comprising a main body mechanism for performing surface heat treatment on the processed gears, the main body mechanism comprising a lower support frame, and the main body mechanism being provided with four gear rotating mechanisms for driving the processed gears to rotate and a material changing mechanism for removing the processed gears after processing and placing the next batch of processed gears to be processed. The main structure includes a fixed ring fixedly installed on a lower support frame. An upper turntable is rotatably installed on the lower support frame. Six tooth support blocks are fixedly installed on the upper turntable. A lifting column is provided inside the tooth support block. A lifting block is fixedly installed on the lifting column. A placement column is fixedly installed on the lifting block. When the lifting column is not lifted, the upper surface of the lifting block is lower than the upper surface of the tooth support block. The inner hole of the gear is fitted on the placement column, and the lower surface of the gear is located on the tooth support block.

[0006] Furthermore, the main body mechanism also includes an upper rotating plate rotatably mounted below the tooth block, a lifting rotating column rotatably mounted inside the upper rotating plate, an upper docking tooth block fixedly mounted below the lifting rotating column, a plurality of docking teeth provided at the lower end of the upper docking tooth block, a lower rotating plate rotatably mounted on the upper docking tooth block, a compression spring provided between the lower rotating plate and the upper rotating plate, and the lifting rotating column can rotate and slide up and down relative to the tooth block.

[0007] Furthermore, the main structure also includes a liquid extraction pipe located next to the lower support frame, a coolant tank fixedly installed next to the liquid extraction pipe, the liquid extraction pipe being connected to the coolant tank, a pump motor fixedly installed at the bottom of the liquid extraction pipe, and pump blades fixedly installed on the motor shaft of the pump motor.

[0008] Furthermore, the main structure also includes a spray pipe fixedly installed on the liquid extraction pipe, a return liquid tray fixedly installed on the liquid extraction pipe, the return liquid tray being located below the spray pipe, a return liquid pipe fixedly installed at the lower end of the return liquid tray, and the return liquid pipe being fixedly installed with the coolant tank.

[0009] Furthermore, the main structure also includes a heating machine located next to the lower support frame. The heating machine is equipped with two high-frequency heating coils. A turntable motor is fixedly installed on the fixed ring. A motor gear is fixedly installed on the motor shaft of the turntable motor. A turntable gear is fixedly installed on the upper turntable. The turntable gear meshes with the motor gear.

[0010] The turntable motor drives the motor gear to rotate, which in turn drives the turntable gear and the upper turntable to rotate. The upper turntable rotates 120 degrees each time, then the turntable motor stops for a period of time, and then the upper turntable rotates 120 degrees again. This process repeats. The two processing gears form a group and pass through the material changing mechanism, the high-frequency heating coil, and the spray pipe in sequence.

[0011] The two processed gears with completed surface treatment are removed by the material changing mechanism. Then, the two gears to be processed are placed on two support blocks. The placement column is located in the center hole of the processed gear, and the lower surface of the processed gear is in contact with the upper surface of the support block.

[0012] When the two processing gears reach below the two high-frequency heating coils, the gear rotating mechanism lifts the processing gears from the support block and drives them to rotate, so that the processing gears reach the inside of the high-frequency heating coils. The high-frequency heating coils then heat-treat the processing gears. During the heat treatment, the processing gears rotate continuously, which improves the heating uniformity and enhances the heat treatment effect.

[0013] Once the heat treatment is complete, the two machined gears reach the area between the spray pipe and the return plate. The gear rotation mechanism lifts the machined gears from the support block and drives them to rotate. The pump motor drives the pump blades to rotate, drawing coolant from the coolant tank. The coolant then enters the spray pipe through the extraction pipe and is sprayed onto the rotating machined gears, rapidly cooling them after heat treatment. The coolant then flows back to the coolant tank through the return pipe for recycling.

[0014] Furthermore, the gear-rotating mechanism includes a lower connecting rod fixedly mounted on a fixed ring, a lower motor plate fixedly mounted below the lower connecting rod, a lower motor fixedly mounted on the lower motor plate, an inner square column fixedly mounted on the motor shaft of the lower motor, an outer sliding column slidably mounted on the outer side of the inner square column, a lower mating tooth block fixedly mounted on the outer sliding column, the lower mating tooth block being provided with multiple mating teeth, and the outer sliding column being able to rotate and slide up and down relative to the lower connecting rod.

[0015] Furthermore, the gear mechanism also includes a lower connecting plate fixedly installed at the lower end of the outer sliding column, an inner turntable rotatably mounted on the lower connecting plate, an upper turntable rotatably mounted on the lower connecting rod, and a return spring provided between the upper turntable and the inner turntable.

[0016] Furthermore, the gear-rotating mechanism also includes a lifting electric cylinder fixedly mounted on the lower connecting rod. A lifting plate is fixedly mounted on the output end of the lifting electric cylinder, and multiple balls are rotatably mounted on the lifting plate, with the balls contacting the lower surface of the lower connecting plate.

[0017] Two of the four rotating gear mechanisms are located below the high-frequency heating coil, and two are located below the outlet end of the spray pipe. When the upper docking gear block reaches above the lower docking gear block, the lifting electric cylinder retracts, causing the lifting plate and ball bearings to rise. The ball bearings cause the lower docking plate and inner turntable to rise, and the outer sliding column and lower docking gear block rise relative to the inner square column. The return spring is compressed, and then the lower docking gear block meshes with the upper docking gear block. Subsequently, the outer sliding column and lower docking gear block continue to rise a short distance, causing the upper docking gear block, lower turntable, lifting column, lifting block, and placement column to rise. The compression spring is compressed, and the upper surface of the lifting block lifts the processed gear, causing the lower surface of the processed gear to separate from the upper surface of the gear block, allowing the lower surface of the processed gear to be fully heated and cooled. Subsequently, the lower motor rotates, causing the inner square column to rotate, which in turn causes the outer sliding column, lower docking plate, and lower docking gear block to rotate, which in turn causes the upper docking gear block, lifting column, lifting block, and placement column to rotate, thereby causing the processed gear to rotate.

[0018] Furthermore, the material changing mechanism includes a connecting frame fixedly installed on the lower support frame, a lower electric cylinder fixedly installed on the connecting frame, a lifting frame installed at a height on the output end of the lower electric cylinder, a rotating motor fixedly installed on the lifting frame, and a rotating placement plate fixedly installed on the motor shaft of the rotating motor.

[0019] Furthermore, the rotating placement plate is provided with four clamping modules. Each clamping module includes an elliptical block rotatably mounted on the rotating placement plate. A motor for driving the elliptical block to rotate is provided inside the rotating placement plate. An outer fixing frame is fixedly mounted on the rotating placement plate. A crossbar is fixedly mounted on the outer fixing frame. Two clamping plates are slidably mounted on the crossbar. The elliptical block is located between the two clamping plates. A clamping spring is provided between the clamping plates and the outer fixing frame.

[0020] During loading, the motor on the rotating placement plate drives the two elliptical blocks on the outside to rotate. When the two ends of the major axis of the elliptical block contact the clamping plates, the two clamping plates move outward along the crossbar, and the clamping spring is compressed. At this time, the clamping plates are in the open state. The gear to be processed is placed between the two clamping plates. Then the elliptical block rotates. When the two ends of the minor axis of the elliptical block contact the clamping plates, the crossbar springs back, and the gear to be processed is clamped by the two clamping plates.

[0021] Then, the lower electric cylinder retracts, causing the lifting frame and rotating placement plate to descend. This allows the clamping plates of the two clamping modules near the inner side to reach the outside of the two processed gears located on the placement column. At this point, the two ends of the major axis of the elliptical block contact the clamping plates. Subsequently, the elliptical block rotates, causing the two ends of the minor axis of the elliptical block to contact the clamping plates. The clamping spring causes the two clamping plates to hold the processed gears on the placement column. Then, the lower electric cylinder extends, causing the rotating placement plate to rise. The clamping plates lift the processed gears from the placement column. Then, the rotating motor drives the rotating placement plate to rotate 180 degrees, so that the gear to be processed reaches the top of the placement column, while the processed gear reaches the outside. Then, the rotating placement plate descends, and the clamping plates place the gear to be processed onto the placement column, and the processed gear falls onto the tooth support block. Then, the elliptical blocks of the four clamping modules rotate, causing the clamping plates to open. At this point, the processed gear can be removed, while the gear to be processed remains on the placement column. Then, the rotating placement plate rises, causing the clamping plates to move away from the outside of the placed processed gear, completing the removal and placement of the processed gear.

[0022] The beneficial effects of this invention compared with the prior art are: (1) This invention, through the coordinated operation of the gear rotating mechanism and the liftable placement column, can precisely lift the gear at the heating and cooling station and drive it to rotate at high speed and stably, ensuring that the gear tooth surface, tooth root and end face and other parts can be exposed to the induction field of the high-frequency heating coil and the spray range of the coolant, reducing the heating and cooling dead angle caused by static or partial obstruction, thus improving the hardened layer depth and uniformity of the gear structure, effectively avoiding traditional defects such as soft spots and deformation, and improving the comprehensive performance of the gear surface hardness, wear resistance and fatigue strength; (2) This invention integrates The automated material changing mechanism and the intermittently rotating main body mechanism form a complete production cycle of feeding, heating, cooling and unloading. The material changing mechanism can complete the picking and placing operations simultaneously. With the precise indexing of the turntable, the production cycle is highly continuous, and the automation level of the production process is improved. (3) The present invention is equipped with a complete coolant circulation system consisting of a coolant tank, a pumping system, a spray pipe, a return plate and a return pipe. The coolant used for quenching after spraying is effectively collected by the return plate and automatically returned to the storage tank through the pipeline. After processing, it is recycled, which reduces the consumption and discharge of the cooling medium and reduces the material cost in production. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the main structure of the present invention. Figure 1 .

[0025] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 2 .

[0026] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 3 .

[0027] Figure 5 This is a schematic diagram of the main structure of the present invention. Figure 4 .

[0028] Figure 6 This is a schematic diagram of the gear rotating mechanism of the present invention. Figure 1 .

[0029] Figure 7 This is a schematic diagram of the gear rotating mechanism of the present invention. Figure 2 .

[0030] Figure 8 This is a schematic diagram of the gear rotating mechanism of the present invention. Figure 3 .

[0031] Figure 9 This is a schematic diagram of the material changing mechanism of the present invention.

[0032] Reference numerals: 101-Lower support frame; 102-Fixing ring; 103-Turntable motor; 104-Motor gear; 105-Upper turntable; 106-Turntable gear; 107-Lifting column; 108-Upper rotating plate; 109-Push-up block; 110-Placement column; 111-Supporting tooth block; 112-Compression spring; 113-Upper connecting tooth block; 114-Lower rotating plate; 115-Coolant tank; 116-Suction pipe; 117-Pump motor; 118-Pump blade; 119-Spray pipe; 120-Return plate; 121-Return pipe; 122-Heating machine; 123-High-frequency heating coil; 201-Lower connecting rod; 202-Lifting electric cylinder; 203-Lifting plate; 204-Ball bearing; 205-Lower motor; 206-Lower motor plate; 207-Inner square column; 208-Outer sliding column; 209-Lower connecting tooth block; 210-Lower connecting plate; 211-Inner turntable; 212-Reset spring; 213-Upper turntable; 301-Connecting frame; 302-Lower electric cylinder; 303-Lifting frame; 304-Rotating motor; 305-Rotating placement plate; 306-Elliptical block; 307-Outer fixed frame; 308-Crossbar; 309-Clamping spring; 310-Clamping piece; 4-Processed gear. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] Example: Reference Figures 1-9 A surface treatment device for gear processing includes a main body mechanism for performing surface heat treatment on the processed gear 4. The main body mechanism includes a lower support frame 101. The main body mechanism is provided with four gear rotating mechanisms for driving the processed gear 4 to rotate and a material changing mechanism for taking away the processed gear 4 after processing and putting in the next batch of processed gear 4 to be processed. The main structure includes a fixing ring 102 fixedly installed on the lower support frame 101. An upper turntable 105 is rotatably installed on the lower support frame 101. Six tooth support blocks 111 are fixedly installed on the upper turntable 105. A lifting column 107 is provided inside the tooth support block 111. A lifting block 109 is fixedly installed on the lifting column 107. A placement column 110 is fixedly installed on the lifting block 109. When the lifting column 107 is not lifted, the upper surface of the lifting block 109 is lower than the upper surface of the tooth support block 111. The inner hole of the processed gear 4 is fitted on the placement column 110, and the lower surface of the processed gear 4 is located on the tooth support block 111.

[0035] like Figures 2-5As shown, the main mechanism also includes an upper rotating plate 108 rotatably mounted below the tooth block 111, a lifting rotating column 107 rotatably mounted inside the upper rotating plate 108, an upper docking tooth block 113 fixedly mounted below the lifting rotating column 107, a plurality of docking teeth provided at the lower end of the upper docking tooth block 113, a lower rotating plate 114 rotatably mounted on the upper docking tooth block 113, a compression spring 112 provided between the lower rotating plate 114 and the upper rotating plate 108, and the lifting rotating column 107 can rotate and slide up and down relative to the tooth block 111.

[0036] like Figures 2-5 As shown, the main structure also includes a liquid extraction pipe 116 located next to the lower support frame 101. A coolant tank 115 is fixedly installed next to the liquid extraction pipe 116. The liquid extraction pipe 116 is connected to the coolant tank 115. A pump motor 117 is fixedly installed at the bottom of the liquid extraction pipe 116. A pump blade 118 is fixedly installed on the motor shaft of the pump motor 117.

[0037] like Figures 2-5 As shown, the main structure also includes a spray pipe 119 fixedly installed on the liquid extraction pipe 116. A return liquid tray 120 is fixedly installed on the liquid extraction pipe 116. The return liquid tray 120 is located below the spray pipe 119. A return liquid pipe 121 is fixedly installed at the lower end of the return liquid tray 120. The return liquid pipe 121 is fixedly installed with the coolant tank 115.

[0038] like Figures 2-5 As shown, the main structure also includes a heater 122 located next to the lower support frame 101. The heater 122 is equipped with two high-frequency heating coils 123. A turntable motor 103 is fixedly installed on the fixed ring 102. A motor gear 104 is fixedly installed on the motor shaft of the turntable motor 103. A turntable gear 106 is fixedly installed on the upper turntable 105. The turntable gear 106 meshes with the motor gear 104.

[0039] The turntable motor 103 drives the motor gear 104 to rotate, and the motor gear 104 drives the turntable gear 106 and the upper turntable 105 to rotate. The upper turntable 105 rotates 120 degrees each time, and then the turntable motor 103 stops for a period of time. Then the upper turntable 105 rotates 120 degrees again, and so on. The two processing gears 4 form a group and pass through the material changing mechanism, the high-frequency heating coil 123 and the spray pipe 119 in sequence.

[0040] The two processed gears 4 with the surface treatment completed are removed by the material changing mechanism. Then, the two processed gears 4 to be processed are placed on the two tooth support blocks 111. The placement column 110 is located in the center hole of the processed gear 4, and the lower surface of the processed gear 4 is in contact with the upper surface of the tooth support block 111.

[0041] When the two processing gears 4 reach below the two high-frequency heating coils 123, the gear rotating mechanism lifts the processing gears 4 from the support block 111 and drives the processing gears 4 to rotate, so that the processing gears 4 reach the inside of the high-frequency heating coils 123. The processing gears 4 are heat-treated by the high-frequency heating coils 123. During the heat treatment, the processing gears 4 rotate continuously to improve the heating uniformity and improve the heat treatment effect.

[0042] When the heat treatment is completed, the two processed gears 4 reach the area between the spray pipe 119 and the return plate 120. The gear rotating mechanism lifts the processed gears 4 from the support block 111 and drives them to rotate. The pump motor 117 drives the pump blades 118 to rotate, and the pump blades 118 draw out the coolant from the coolant tank 115. Then, the coolant enters the spray pipe 119 through the extraction pipe 116 and sprays the coolant onto the rotating processed gears 4 through the spray pipe 119 to quickly cool the heat-treated processed gears 4. The coolant then flows back to the coolant tank 115 through the return pipe 121 for recycling.

[0043] like Figures 6-8 As shown, the gear mechanism includes a lower connecting rod 201 fixedly mounted on a fixed ring 102. A lower motor plate 206 is fixedly mounted below the lower connecting rod 201. A lower motor 205 is fixedly mounted on the lower motor plate 206. An inner square column 207 is fixedly mounted on the motor shaft of the lower motor 205. An outer sliding column 208 is slidably mounted on the outer side of the inner square column 207. A lower mating tooth block 209 is fixedly mounted on the outer sliding column 208. The lower mating tooth block 209 is provided with multiple mating teeth. The outer sliding column 208 can rotate and slide up and down relative to the lower connecting rod 201.

[0044] like Figures 6-8 As shown, the gear mechanism also includes a lower connecting plate 210 fixedly installed at the lower end of the outer sliding column 208. An inner turntable 211 is rotatably installed on the lower connecting plate 210, and an upper turntable 213 is rotatably installed on the lower connecting rod 201. A return spring 212 is provided between the upper turntable 213 and the inner turntable 211.

[0045] like Figures 6-8 As shown, the gear mechanism also includes a lifting electric cylinder 202 fixedly installed on the lower connecting rod 201. A lifting plate 203 is fixedly installed on the output end of the lifting electric cylinder 202. Multiple balls 204 are rotatably installed on the lifting plate 203. The balls 204 are in contact with the lower surface of the lower connecting plate 210.

[0046] Two of the four rotating gear mechanisms are located below the high-frequency heating coil 123, and two are located below the outlet end of the spray pipe 119. When the upper docking gear block 113 reaches above the lower docking gear block 209, the lifting cylinder 202 retracts, causing the lifting plate 203 and the ball bearing 204 to rise. The ball bearing 204 causes the lower docking plate 210 and the inner turntable 211 to rise. The outer sliding column 208 and the lower docking gear block 209 rise relative to the inner square column 207, and the return spring 212 is compressed. Subsequently, the lower docking gear block 209 meshes with the upper docking gear block 113. Then, the outer sliding column 208 and the lower docking gear block 209 continue to rise a short distance, driving the upper docking gear... Block 113, lower rotating plate 114, lifting rotating column 107, lifting block 109 and placement column 110 rise, compression spring 112 is compressed, and the upper surface of lifting block 109 lifts the processed gear 4, so that the lower surface of the processed gear 4 separates from the upper surface of the tooth support block 111, so that the lower surface of the processed gear 4 can be fully heated and cooled. Then the lower motor 205 rotates to drive the inner square column 207 to rotate, which drives the outer sliding column 208, lower docking plate 210 and lower docking tooth block 209 to rotate, which drives the upper docking tooth block 113, lifting rotating column 107, lifting block 109 and placement column 110 to rotate, thereby driving the processed gear 4 to rotate.

[0047] like Figure 9 As shown, the material changing mechanism includes a connecting frame 301 fixedly installed on the lower support frame 101, a lower electric cylinder 302 fixedly installed on the connecting frame 301, a lifting frame 303 mounted at a height on the output end of the lower electric cylinder 302, a rotating motor 304 fixedly installed on the lifting frame 303, and a rotating placement plate 305 fixedly installed on the motor shaft of the rotating motor 304.

[0048] like Figure 9 As shown, four clamping modules are provided on the rotating placement plate 305. Each clamping module includes an elliptical block 306 rotatably mounted on the rotating placement plate 305. A motor for driving the elliptical block 306 to rotate is provided inside the rotating placement plate 305. An outer fixing frame 307 is fixedly mounted on the rotating placement plate 305. A crossbar 308 is fixedly mounted on the outer fixing frame 307. Two clamping pieces 310 are slidably mounted on the crossbar 308. The elliptical block 306 is located between the two clamping pieces 310. A clamping spring 309 is provided between the clamping pieces 310 and the outer fixing frame 307.

[0049] During loading, the motor on the rotating placement plate 305 drives the two elliptical blocks 306 located on the outer side to rotate. When the two ends of the long axis of the elliptical block 306 contact the clamping plate 310, it drives the two clamping plates 310 to move outward along the crossbar 308, and the clamping spring 309 is compressed. At this time, the clamping plate 310 is in the open state. The gear 4 to be processed is placed between the two clamping plates 310. Then the elliptical block 306 rotates. When the two ends of the short axis of the elliptical block 306 contact the clamping plate 310, the crossbar 308 rebounds, and the gear 4 to be processed is clamped by the two clamping plates 310.

[0050] Then, the lower electric cylinder 302 retracts, causing the lifting frame 303 and the rotating placement plate 305 to descend. This allows the clamping plates 310 of the two clamping modules near the inner side to reach the outer sides of the two processed gears 4 located on the placement column 110. At this time, the two ends of the long axis of the elliptical block 306 contact the clamping plates 310. Then, the elliptical block 306 rotates, causing the two ends of the short axis of the elliptical block 306 to contact the clamping plates 310. The clamping spring 309 causes the two clamping plates 310 to clamp the processed gears 4 on the placement column 110. Then, the lower electric cylinder 302 extends, causing the rotating placement plate 305 to rise. The clamping plates 310 then lift the processed gears 4 from the placement column 110, and then rotate... Motor 304 drives rotating placement plate 305 to rotate 180 degrees, so that the gear 4 to be processed reaches above placement column 110, and the processed gear 4 reaches the outside. Then, rotating placement plate 305 descends, clamping plate 310 puts the gear 4 to be processed onto placement column 110, and the processed gear 4 falls onto tooth support block 111. Then, the elliptical blocks 306 of the four clamping modules rotate, so that clamping plate 310 opens. At this time, the processed gear 4 can be removed, and the gear 4 to be processed remains on placement column 110. Then, rotating placement plate 305 rises, so that clamping plate 310 leaves the outside of the placed gear 4, completing the removal and placement of the processed gear 4.

[0051] The working principle of the surface treatment device for gear processing disclosed in this invention is as follows: During loading, the motor on the rotating placement plate 305 drives the two elliptical blocks 306 located on the outer side to rotate. When the two ends of the long axis of the elliptical block 306 contact the clamping plate 310, the two clamping plates 310 are driven to move outward along the crossbar 308, and the clamping spring 309 is compressed. At this time, the clamping plate 310 is in the open state. The gear 4 to be processed is placed between the two clamping plates 310. Then the elliptical block 306 rotates. When the two ends of the short axis of the elliptical block 306 contact the clamping plate 310, the crossbar 308 rebounds, and the gear 4 to be processed is clamped by the two clamping plates 310.

[0052] Then, the lower electric cylinder 302 retracts, causing the lifting frame 303 and the rotating placement plate 305 to descend. This allows the clamping plates 310 of the two clamping modules near the inner side to reach the outer sides of the two processed gears 4 located on the placement column 110. At this time, the two ends of the long axis of the elliptical block 306 contact the clamping plates 310. Then, the elliptical block 306 rotates, causing the two ends of the short axis of the elliptical block 306 to contact the clamping plates 310. The clamping spring 309 causes the two clamping plates 310 to clamp the processed gears 4 on the placement column 110. Then, the lower electric cylinder 302 extends, causing the rotating placement plate 305 to rise. The clamping plates 310 then lift the processed gears 4 from the placement column 110, and then rotate... Motor 304 drives rotating placement plate 305 to rotate 180 degrees, so that the gear 4 to be processed reaches above placement column 110, and the processed gear 4 reaches the outside. Then, rotating placement plate 305 descends, clamping plate 310 puts the gear 4 to be processed onto placement column 110, and the processed gear 4 falls onto tooth support block 111. Then, the elliptical blocks 306 of the four clamping modules rotate, so that clamping plate 310 opens. At this time, the processed gear 4 can be removed, and the gear 4 to be processed remains on placement column 110. Then, rotating placement plate 305 rises, so that clamping plate 310 leaves the outside of the placed gear 4, completing the removal and placement of the processed gear 4.

[0053] The turntable motor 103 drives the motor gear 104 to rotate, and the motor gear 104 drives the turntable gear 106 and the upper turntable 105 to rotate. The upper turntable 105 rotates 120 degrees each time, and then the turntable motor 103 stops for a period of time. Then the upper turntable 105 rotates 120 degrees again, and so on. The two processing gears 4 form a group and pass through the material changing mechanism, the high-frequency heating coil 123 and the spray pipe 119 in sequence. Two of the four rotating gear mechanisms are located below the high-frequency heating coil 123, and two are located below the outlet end of the spray pipe 119. When the upper docking gear block 113 reaches above the lower docking gear block 209, the lifting cylinder 202 retracts, causing the lifting plate 203 and the ball bearing 204 to rise. The ball bearing 204 causes the lower docking plate 210 and the inner turntable 211 to rise. The outer sliding column 208 and the lower docking gear block 209 rise relative to the inner square column 207, and the return spring 212 is compressed. Subsequently, the lower docking gear block 209 meshes with the upper docking gear block 113. Then, the outer sliding column 208 and the lower docking gear block 209 continue to rise a short distance, driving the upper docking gear... Block 113, lower rotating plate 114, lifting rotating column 107, lifting block 109 and placement column 110 rise, compression spring 112 is compressed, and the upper surface of lifting block 109 lifts the processed gear 4, so that the lower surface of the processed gear 4 separates from the upper surface of the tooth support block 111, so that the lower surface of the processed gear 4 can be fully heated and cooled. Then the lower motor 205 rotates to drive the inner square column 207 to rotate, which drives the outer sliding column 208, lower docking plate 210 and lower docking tooth block 209 to rotate, which drives the upper docking tooth block 113, lifting rotating column 107, lifting block 109 and placement column 110 to rotate, thereby driving the processed gear 4 to rotate.

[0054] When the two processing gears 4 reach below the two high-frequency heating coils 123, the gear rotating mechanism lifts the processing gears 4 from the support block 111 and drives the processing gears 4 to rotate, so that the processing gears 4 reach the inside of the high-frequency heating coils 123. The processing gears 4 are heat-treated by the high-frequency heating coils 123. During the heat treatment, the processing gears 4 rotate continuously to improve the heating uniformity and improve the heat treatment effect. When the heat treatment is completed, the two processed gears 4 reach the area between the spray pipe 119 and the return plate 120. The gear rotating mechanism lifts the processed gears 4 from the support block 111 and drives them to rotate. The pump motor 117 drives the pump blades 118 to rotate, and the pump blades 118 draw out the coolant from the coolant tank 115. Then, the coolant enters the spray pipe 119 through the extraction pipe 116 and sprays the coolant onto the rotating processed gears 4 through the spray pipe 119 to quickly cool the heat-treated processed gears 4. The coolant then flows back to the coolant tank 115 through the return pipe 121 for recycling.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A surface treatment apparatus for gear machining, comprising a main body mechanism for performing surface heat treatment on the machined gear (4), characterized in that: The main body includes a lower support frame (101), and the main body is provided with four gear-rotating mechanisms for driving the processing gears (4) to rotate and a material-changing mechanism for taking away the processed gears (4) and putting in the next batch of processed gears (4) to be processed. The main structure includes a fixed ring (102) fixedly installed on the lower support frame (101), an upper turntable (105) rotatably installed on the lower support frame (101), six tooth blocks (111) fixedly installed on the upper turntable (105), a lifting column (107) is provided inside the tooth block (111), a lifting block (109) is fixedly installed on the lifting column (107), and a placement column (110) is fixedly installed on the lifting block (109). When the lifting column (107) is not lifted, the upper surface of the lifting block (109) is lower than the upper surface of the tooth block (111), the inner hole of the machining gear (4) is sleeved on the placement column (110), and the lower surface of the machining gear (4) is located on the tooth block (111).

2. The surface treatment apparatus for gear processing according to claim 1, characterized in that: The main structure also includes an upper rotating plate (108) rotatably mounted below the tooth block (111), a lifting rotating column (107) rotatably mounted inside the upper rotating plate (108), an upper docking tooth block (113) fixedly mounted below the lifting rotating column (107), a plurality of docking teeth are provided at the lower end of the upper docking tooth block (113), a lower rotating plate (114) is rotatably mounted on the upper docking tooth block (113), a compression spring (112) is provided between the lower rotating plate (114) and the upper rotating plate (108), and the lifting rotating column (107) can rotate and slide up and down relative to the tooth block (111).

3. The surface treatment apparatus for gear processing according to claim 2, characterized in that: The main structure also includes a liquid extraction pipe (116) located next to the lower support frame (101), a coolant tank (115) fixedly installed next to the liquid extraction pipe (116), the liquid extraction pipe (116) is connected to the coolant tank (115), a pump motor (117) is fixedly installed at the bottom of the liquid extraction pipe (116), and a pump blade (118) is fixedly installed on the motor shaft of the pump motor (117).

4. The surface treatment apparatus for gear processing according to claim 3, characterized in that: The main structure also includes a spray pipe (119) fixedly installed on the liquid extraction pipe (116), a return plate (120) fixedly installed on the liquid extraction pipe (116), the return plate (120) is located below the spray pipe (119), a return pipe (121) is fixedly installed at the lower end of the return plate (120), and the return pipe (121) is fixedly installed with the coolant tank (115).

5. The surface treatment apparatus for gear processing according to claim 4, characterized in that: The main structure also includes a heating machine (122) located next to the lower support frame (101). The heating machine (122) is equipped with two high-frequency heating coils (123). A turntable motor (103) is fixedly installed on the fixed ring (102). A motor gear (104) is fixedly installed on the motor shaft of the turntable motor (103). A turntable gear (106) is fixedly installed on the upper turntable (105). The turntable gear (106) meshes with the motor gear (104).

6. The surface treatment apparatus for gear machining according to claim 1, characterized in that: The gear-rotating mechanism includes a lower connecting rod (201) fixedly mounted on a fixed ring (102), a lower motor plate (206) fixedly mounted below the lower connecting rod (201), a lower motor (205) fixedly mounted on the lower motor plate (206), an inner square column (207) fixedly mounted on the motor shaft of the lower motor (205), an outer sliding column (208) slidably mounted on the outer side of the inner square column (207), a lower mating tooth block (209) fixedly mounted on the outer sliding column (208), and multiple mating teeth provided on the lower mating tooth block (209). The outer sliding column (208) can rotate and slide up and down relative to the lower connecting rod (201).

7. The surface treatment apparatus for gear machining according to claim 6, characterized in that: The gear mechanism also includes a lower connecting plate (210) fixedly installed at the lower end of the outer sliding column (208), an inner turntable (211) rotatably installed on the lower connecting plate (210), an upper turntable (213) rotatably installed on the lower connecting rod (201), and a return spring (212) is provided between the upper turntable (213) and the inner turntable (211).

8. The surface treatment apparatus for gear machining according to claim 7, characterized in that: The gear mechanism also includes a lifting electric cylinder (202) fixedly installed on the lower connecting rod (201). A lifting plate (203) is fixedly installed on the output end of the lifting electric cylinder (202). Multiple balls (204) are rotatably installed on the lifting plate (203). The balls (204) are in contact with the lower surface of the lower connecting plate (210).

9. The surface treatment apparatus for gear processing according to claim 1, characterized in that: The material changing mechanism includes a connecting frame (301) fixedly installed on the lower support frame (101), a lower electric cylinder (302) fixedly installed on the connecting frame (301), a lifting frame (303) installed at a height on the output end of the lower electric cylinder (302), a rotating motor (304) fixedly installed on the lifting frame (303), and a rotating placement plate (305) fixedly installed on the motor shaft of the rotating motor (304).

10. A surface treatment apparatus for gear processing according to claim 9, characterized in that: The rotating placement plate (305) is provided with four clamping modules. Each clamping module includes an elliptical block (306) rotatably mounted on the rotating placement plate (305). The rotating placement plate (305) is provided with a motor for driving the elliptical block (306) to rotate. An outer fixing frame (307) is fixedly mounted on the rotating placement plate (305). A crossbar (308) is fixedly mounted on the outer fixing frame (307). Two clamping plates (310) are slidably mounted on the crossbar (308). The elliptical block (306) is located between the two clamping plates (310). A clamping spring (309) is provided between the clamping plates (310) and the outer fixing frame (307).

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