A processing device and processing method for a sprocket used in an automotive transmission

Abstract

The present invention discloses a processing device and a processing method for a sprocket used in an automotive transmission, belonging to the technical field of sprocket processing. The processing device for the sprocket used in the automotive transmission includes a device main body. At the top of the support platform in the middle of the frame, a servo transmission mechanism is fixedly installed; a support frame is also fixedly connected to the frame, and a rotary drive mechanism is fixedly installed at the top of the support frame. A thimble mechanism is installed behind the servo transmission mechanism; an automatic hobbing mechanism for hobbing a metal blank is fixedly installed on the inner surface of the top of the frame. After the metal blank is hobbed, a metal sprocket is formed. A cutting fluid spraying mechanism for spraying cutting fluid is also installed at the top of the support frame. By designing a feeding mechanism, a servo transmission mechanism, a rotary drive mechanism, a thimble mechanism, and an automatic hobbing mechanism, the compact and reliable structural design of the present invention can complete continuous automated hobbing processing of a large number of chain teeth.

Description

Technical Field

[0001] The present invention belongs to the technical field of sprocket processing, and particularly relates to a processing device and a processing method for a sprocket used in an automotive transmission. Background Art

[0002] An automotive transmission sprocket is an important component in a transmission, usually used to transmit power and achieve variable speed functions with different gear ratios. The function of a sprocket is similar to that of a gear. They can transmit power from one shaft to another through a chain and change the transmission ratio when needed. In some manual transmissions or certain automatic transmissions, sprockets can be used to connect different gear sets to achieve multi-gear shifting. They are usually designed to be strong and durable to withstand high torque and frequent operation.

[0003] Hobbing is the most common processing method in the production of automotive transmission sprockets. Through continuous cutting of the blank by hobbing, the blank is finally formed into a sprocket. Currently, there are various types of hobbing processing devices on the market, but the structural designs of most current processing devices have defects. When performing hobbing processing, existing devices usually can only process a single blank. In actual operation, the operator needs to individually clamp the blank on a rotating chuck and fix it with a nut. After fixing, the hobbing mechanism can be used for hobbing processing. After processing, manual blanking is still required, and then a new blank needs to be replaced, and so on in a cycle. This processing method is not only time-consuming and laborious but also seriously affects the overall production progress and processing efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a processing device and a processing method for a sprocket used in an automotive transmission.

[0005] The technical solution adopted to solve the above technical problem is: A processing device for a sprocket used in an automotive transmission, including a device main body. The device main body includes a frame. A protective door is slidably connected to the top of the front end of the frame, and a front cover plate is installed at the bottom of the front end of the frame. It also includes a sprocket positioning assembly for clamping a metal blank. An outlet is provided on one side of the support platform in the middle of the frame, and a feeding mechanism is installed on the other side of the frame. A servo transmission mechanism is fixedly installed on the top of the support platform in the middle of the frame;

[0006] A support frame is also fixedly connected to the frame. A rotary drive mechanism is fixedly installed on the top of the support frame. A thimble mechanism is installed behind the servo transmission mechanism. The thimble mechanism can cooperate with the rotary drive mechanism to clamp and fix the sprocket positioning assembly clamping the metal blank, and the rotary drive mechanism drives the sprocket positioning assembly and the metal blank to rotate;

[0007] An automatic hobbing mechanism for hobbing metal blanks is fixedly installed on the inner surface of the top of the frame. After hobbing the metal blank, a metal sprocket is formed. A cutting fluid spraying mechanism for spraying cutting fluid is also installed on the top of the support frame.

[0008] Furthermore, a liquid storage tank for storing cutting fluid is installed inside the frame, and a main controller is installed on one side of the outer wall of the frame.

[0009] Through the above technical solution, the cutting fluid spraying mechanism consists of a liquid suction pipe, a micro pump, and a spraying pipe. The bottom end of the liquid suction pipe penetrates the middle support platform of the frame and extends to the bottom of the liquid storage tank. When the micro pump works, it can extract the cutting fluid in the liquid storage tank and then spray it to the hobbing processing position through the spraying pipe, so as to provide lubrication during the hobbing process and realize the cooling and heat dissipation of the hobbing shaft; the main controller is used to control the working states and working speeds of the conveying mechanism, the rotary driving mechanism, the thimble mechanism, and the automatic hobbing mechanism, and can adjust the corresponding parameters according to actual needs.

[0010] Furthermore, the feeding mechanism includes a feeding port opened on one side of the frame. A feeding rack is fixedly installed inside the feeding port, and a placement groove corresponding to the feeding rack is fixedly connected to the outside of the feeding port.

[0011] Through the above technical solution, the feeding mechanism is mainly used for the feeding and guiding of the sprocket positioning component and the metal blank. During processing, the clamping between the metal blank and the sprocket positioning component is completed by an operator or an automated manipulator, and then the clamped sprocket positioning component can be horizontally placed in the placement groove. The sequentially arranged sprocket positioning components will roll down along the placement groove to the inclined feeding rack for subsequent feeding and directional conveying by the servo conveying mechanism.

[0012] Furthermore, the servo conveying mechanism includes a conveying frame fixed on the middle support platform of the frame. Conveying roller shafts are rotatably connected to both sides of the center of the conveying frame. A first driving motor connected to the corresponding conveying roller shaft is installed on one side of the rear end of the conveying frame. A conveyor belt is installed between the two conveying roller shafts, and positioning grooves for driving the sprocket positioning component and the metal blank to move directionally are provided on the circumferential side of the conveyor belt.

[0013] Through the above technical solution, the servo transmission mechanism is mainly used for the directional and precise transmission of the sprocket positioning component. During operation, the corresponding transmission roller shaft is driven by the first driving motor to rotate, and then the conveyor belt can be driven to move. Since multiple groups of positioning grooves are provided on the conveyor belt, when the conveyor belt operates, the sprocket positioning component located on the feeding rack will naturally roll onto the corresponding positioning groove, and the conveyor belt will drive it to move directionally, so as to accurately transmit the sprocket positioning component clamped with the metal blank to the hobbing processing position. After the hobbing processing is completed, the conveyor belt will continue to drive it to move towards the end. When it moves to the end of the conveyor belt, under the action of gravity, the two formed metal sprockets together with the sprocket positioning component will roll through the discharge port to the designated collection position.

[0014] Furthermore, the rotation driving mechanism includes a fixed sliding seat fixed on the top of the support frame. A moving sliding seat is slidably connected to the fixed sliding seat. A pushing cylinder corresponding to the moving sliding seat is installed at the front end of the fixed sliding seat. A servo motor is also installed on the moving sliding seat, and a plug-in block is fixedly installed at the output end of the servo motor.

[0015] Through the above technical solution, when the sprocket positioning component clamped with the metal blank accurately moves to the hobbing processing position, the piston rod of the pushing cylinder will extend outwards, and then the moving sliding seat will be pushed to move backward, so that the plug-in block at the output end of the servo motor will slowly contact the sprocket positioning component and accurately plug into the plug-in slot. Cooperating with the thimble mechanism, the clamping and fixing of the sprocket positioning component can be completed. At the same time, the servo motor can also drive the sprocket positioning component and the metal blank to rotate slowly through the plug-in block to cooperate with the automatic hobbing mechanism to perform hobbing processing on the metal blank.

[0016] Furthermore, the thimble mechanism includes a support column fixed on the support platform in the middle of the machine frame. A thimble cylinder is installed at the top of the support column, and the front end of the piston rod of the thimble cylinder is rotatably connected with a rotating thimble.

[0017] Through the above technical solution, the thimble mechanism can cooperate with the rotation driving mechanism to complete the clamping and fixing of the sprocket positioning component and the metal blank. When the piston rod of the thimble cylinder extends forward, it can drive the rotating thimble to move forward and make the tapered tip at its front end accurately insert into the thimble slot. Under the action of the extrusion force, the sprocket positioning component can clamp the two metal blanks, thus completing the fixation of the two metal blanks, so that the sprocket positioning component and the two metal blanks can rotate synchronously with the plug-in block.

[0018] Further, the automatic hobbing mechanism includes a lifting cylinder fixedly installed on the inner surface of the top of the frame. The bottom end of the piston rod of the lifting cylinder is fixedly connected with a fixed frame. A hobbing shaft is rotatably connected to the bottom of the fixed frame. A second driving motor is installed inside the fixed frame. Belt pulleys are fixedly installed at one end of the hobbing shaft and the output end of the second driving motor. A transmission steel belt is installed between the two belt pulleys.

[0019] Through the above technical solution, the automatic hobbing mechanism is mainly used for the automatic hobbing processing of metal blanks. When the metal blank moves to the accurate position, the lifting cylinder will drive the fixed frame to slowly descend, and the second driving motor will also drive the hobbing shaft to rotate through the belt pulley and the transmission steel belt. During the slow contact between the hobbing shaft and the metal blank, the rotating hobbing shaft will hob the two uniformly rotating metal blanks until the metal sprocket is finally formed. After the sprocket is processed and formed, the automatic hobbing mechanism will automatically reset upward. After a new set of metal blanks moves into place, the automatic hobbing mechanism will perform continuous automatic processing.

[0020] Further, the sprocket positioning component includes a first docking component and a second docking component that are inserted into each other. A plugging groove is opened at the center of one end of the first docking component. A magnetic block for adsorbing and fixing the second docking component is installed in the plugging groove. A rotating slot is opened on the outside of the first docking component. Two centrally symmetric inclined blocks are arranged on the periphery of the rotating slot. A thimble groove is opened at the center of the outside of the second docking component.

[0021] Through the above technical solution, the sprocket positioning component is mainly used for the quick clamping and fixing of two metal blanks. A rotating slot is opened on the outside of the first docking component, and two centrally symmetric inclined blocks are arranged in the rotating slot. The outer end face of the inclined block is of an inclined structure. Therefore, when the plugging block at the output end of the servo motor slowly moves into the rotating slot, the rotating plugging block will slowly contact the outer inclined end face of the inclined block and can be smoothly plugged. During the subsequent rotation process, the plugging block will abut against the contact surface of the inclined block. During this process, the rotating thimble at the front end of the thimble mechanism will also move forward, and the conical tip at its front end will accurately insert into the thimble groove. Under the action of the front and rear extrusion forces, the entire sprocket positioning component and the two metal blanks can be synchronously driven to rotate, so as to cooperate with the automatic hobbing mechanism to complete the hobbing processing of the metal blanks.

[0022] Further, during processing, the two metal blanks are sleeved on the outer wall of the first docking component, and one end of the second docking component is inserted into the plugging groove, and the two metal blanks are pre-clamped and fixed by a magnetic adsorption fixing method.

[0023] A processing method for a processing device of a sprocket for an automotive transmission includes the following specific steps:

[0024] Step 1: Use the sprocket positioning component to pre-clamp and fix the metal blank to be processed. When clamping, the hobbing parts of the two metal blanks need to be fitted together;

[0025] Step 2: Place the sprocket positioning component with the clamped metal blank in the placement groove. Through continuous placement, the sprocket positioning component rolls onto the feeding rack and is arranged in sequence;

[0026] Step 3: Start the first driving motor, and then use the two conveyor rollers to drive the conveyor belt to operate. At this time, the sprocket positioning component at the bottom of the feeding rack will naturally roll into the positioning groove on the conveyor belt and move directionally under the conveying action of the conveyor belt;

[0027] Step 4: When the sprocket positioning component moves to the hobbing processing area between the thimble mechanism and the rotary driving mechanism, the thimble mechanism and the rotary driving mechanism will work synchronously to complete the clamping and fixing of the sprocket positioning component, and the rotary driving mechanism will drive the sprocket positioning component and the corresponding two metal blanks to rotate at a constant speed;

[0028] Step 5: At this time, the lifting cylinder will drive the fixed frame to slowly descend, and the second driving motor will drive the hobbing shaft to rotate through the belt pulley and the transmission steel belt, and then hob the two metal blanks rotating at a constant speed until the metal sprocket is finally formed;

[0029] Step 6: After the processing is completed, the thimble mechanism and the rotary driving mechanism are reset, and the conveyor belt drives it to continue to move. When it moves to the end of the conveyor belt, under the action of gravity, the two formed metal sprockets together with the sprocket positioning component will roll through the discharge port to the designated collection position.

[0030] The beneficial effects of the present invention are as follows: (1) By designing the feeding mechanism, servo transmission mechanism, rotary driving mechanism, thimble mechanism and automatic hobbing mechanism, the compact and reliable structural design of the present invention can complete the continuous automated hobbing processing of a large number of chain teeth; (2) By designing the sprocket positioning component and cooperating with the rotary driving mechanism and the thimble mechanism, the pre-clamping and fixing of the blank can be completed, ensuring the stability and reliability of the blank during the production and processing process, and by designing an automated processing mode, the overall processing accuracy can be guaranteed; (3) By designing an automated production and processing equipment, there is no need for manual continuous loading and unloading operations. Workers only need to complete the clamping and placement operations, with low technical requirements, and at the same time, the overall production and processing efficiency is improved. Brief Description of the Drawings

[0031] Figure 1 is the three-dimensional structure diagram of the present invention;

[0032] Figure 2 is the front view of the present invention;

[0033] Figure 3 is the first internal perspective structure diagram of the device of the present invention;

[0034] Figure 4 is the second internal perspective structure diagram of the device of the present invention;

[0035] Figure 5 is the right view of the present invention;

[0036] Figure 6 is Figure 5 the sectional view taken along the A-A direction in

[0037] Figure 7 is the first internal perspective structure diagram of the main body part of the present invention;

[0038] Figure 8 is the second internal perspective structure diagram of the main body part of the present invention;

[0039] Figure 9 is the sectional view of the main body part of the present invention;

[0040] Figure 10 is the structural schematic diagram of the servo transmission mechanism of the present invention;

[0041] Figure 11 is the structural schematic diagram of the rotary drive mechanism of the present invention;

[0042] Figure 12 is the structural schematic diagram of the automatic hobbing mechanism of the present invention;

[0043] Figure 13 is the structural schematic diagram of the assembled state of the sprocket positioning assembly of the present invention;

[0044] Figure 14 is the sectional view of the sprocket positioning assembly of the present invention;

[0045] Figure 15 is the structural schematic diagram of the metal sprocket of the present invention;

[0046] Figure 16 is the structural schematic diagram of the metal blank of the present invention.

[0047] Reference numerals: 1, device main body; 101, frame; 102, protective door; 103, front cover plate; 104, liquid storage tank; 105, discharge port; 106, main controller; 2, feeding mechanism; 201, feeding port; 202, feeding frame; 203, placement groove; 3, servo transmission mechanism; 301, transmission frame; 302, transmission roller shaft; 303, first driving motor; 304, conveyor belt; 305, positioning groove; 4, support frame; 5, rotary driving mechanism; 501, fixed sliding seat; 502, movable sliding seat; 503, pushing cylinder; 504, servo motor; 505, plug-in block; 6, ejector pin mechanism; 601, support column; 602, ejector pin cylinder; 603, rotary ejector pin; 7, automatic hobbing mechanism; 701, lifting cylinder; 702, fixed frame; 703, hob shaft; 704, second driving motor; 705, belt pulley; 706, transmission steel belt; 8, cutting fluid spraying mechanism; 9, sprocket positioning assembly; 901, first docking assembly; 902, second docking assembly; 903, plug-in slot; 904, magnetic block; 905, rotary slot; 906, inclined baffle; 907, ejector pin slot; 10, metal sprocket; 11, metal blank. Detailed implementation manners

[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] As Figures 1-16 shown, a processing device for a sprocket used in an automotive transmission according to this embodiment includes a device main body 1. The device main body 1 includes a frame 101. A protective door 102 is slidably connected to the top of the front end of the frame 101. A front cover plate 103 is installed at the bottom of the front end of the frame 101. A liquid storage tank 104 for storing cutting fluid is further installed inside the frame 101. A main controller 106 is installed on one side of the outer wall of the frame 101. A cutting fluid spraying mechanism 8 for spraying cutting fluid is further installed on the top of the support frame 4. The cutting fluid spraying mechanism 8 is composed of a liquid suction pipe, a micro pump and a spraying pipe. The bottom end of the liquid suction pipe penetrates through the middle support platform of the frame 101 and extends to the bottom of the liquid storage tank 104. When the micro pump works, it can extract the cutting fluid in the liquid storage tank 104 and then spray it onto the hobbing processing position through the spraying pipe, so as to provide lubrication during the hobbing process and realize the cooling and heat dissipation of the hob shaft 703; the main controller 106 is used to control the working states and working speeds of the transmission mechanism 3, the rotary driving mechanism 5, the ejector pin mechanism 6 and the automatic hobbing mechanism 7, and corresponding parameter adjustments can be made according to actual needs.

[0050] As Figures 2-3As shown in the figure, a discharge port 105 is provided on one side of the middle support platform of the frame 101. On the other side of the frame 101, a feeding mechanism 2 is installed. The feeding mechanism 2 includes a feeding port 201 opened on one side of the frame 101. Inside the feeding port 201, a feeding rack 202 is fixedly installed. On the outside of the feeding port 201, a placement groove 203 corresponding to the feeding rack 202 is fixedly connected. The feeding mechanism 2 is mainly used for the feeding and guiding of the sprocket positioning assembly 9 and the metal blank 11. During processing, the clamping between the metal blank 11 and the sprocket positioning assembly 9 is completed by an operator or an automated manipulator. Then, the clamped sprocket positioning assembly 9 can be horizontally placed in the placement groove 203. The sequentially arranged sprocket positioning assemblies 9 will roll down along the placement groove 203 to the inclined feeding rack 202 for subsequent material receiving and directional conveying by the servo conveying mechanism 3.

[0051] As Figures 6-10 As shown in the figure, a servo conveying mechanism 3 is fixedly installed on the top of the middle support platform of the frame 101; the servo conveying mechanism 3 includes a conveying frame 301 fixed on the middle support platform of the frame 101. On both sides of the center of the conveying frame 301, conveying roller shafts 302 are rotatably connected. On one side of the rear end of the conveying frame 301, a first driving motor 303 connected to the corresponding conveying roller shaft 302 is installed. Between the two conveying roller shafts 302, a conveyor belt 304 is installed. On the circumferential side of the conveyor belt 304, positioning grooves 305 for driving the sprocket positioning assembly 9 and the metal blank 11 to move directionally are provided. The servo conveying mechanism 3 is mainly used for the directional and precise conveying of the sprocket positioning assembly 9. During operation, the corresponding conveying roller shaft 302 is driven to rotate by the first driving motor 303, and then the conveyor belt 304 can be driven to move. Since multiple groups of positioning grooves 305 are provided on the conveyor belt 304, when the conveyor belt 304 operates, the sprocket positioning assembly 9 located on the feeding rack 202 will naturally roll onto the corresponding positioning groove 305 and be driven by the conveyor belt 304 to move directionally, so that the sprocket positioning assembly 9 clamped with the metal blank 11 can be precisely conveyed to the hobbing processing position. After the hobbing processing is completed, the conveyor belt 304 will continue to drive it to move towards the end. When it moves to the end of the conveyor belt 304, under the action of gravity, the two formed metal sprockets 10 together with the sprocket positioning assembly 9 will roll through the discharge port 105 to the designated collection position.

[0052] As Figures 6-11As shown in the figure, a support frame 4 is also fixedly connected to the frame 101. A rotary drive mechanism 5 is fixedly installed at the top of the support frame 4. The rotary drive mechanism 5 includes a fixed slide base 501 fixed to the top of the support frame 4. A movable slide base 502 is slidably connected to the fixed slide base 501. A push cylinder 503 corresponding to the movable slide base 502 is installed at the front end of the fixed slide base 501. A servo motor 504 is also installed on the movable slide base 502. A plug-in block 505 is fixedly installed at the output end of the servo motor 504. When the sprocket positioning assembly 9 clamping the metal blank 11 accurately moves to the hobbing processing position, the piston rod of the push cylinder 503 will extend outwards, and then it will push the movable slide base 502 to move backwards, so that the plug-in block 505 at the output end of the servo motor 504 slowly contacts the sprocket positioning assembly 9 and accurately plugs into the plug-in slot 903. Cooperating with the thimble mechanism 6, the clamping and fixing of the sprocket positioning assembly 9 can be completed. At the same time, the servo motor 504 can also drive the sprocket positioning assembly 9 and the metal blank 11 to rotate slowly through the plug-in block 505 to cooperate with the automatic hobbing mechanism 7 to perform hobbing processing on the metal blank 11.

[0053] As Figures 6-9 shown, a thimble mechanism 6 is installed at the rear side of the servo transmission mechanism 3. The thimble mechanism 6 can cooperate with the rotary drive mechanism 5 to complete the clamping and fixing of the sprocket positioning assembly 9 clamping the metal blank 11, and the rotary drive mechanism 5 drives the sprocket positioning assembly 9 and the metal blank 11 to rotate; the thimble mechanism 6 includes a support column 601 fixed to the middle support platform of the frame 101. A thimble cylinder 602 is installed at the top of the support column 601. The front end of the piston rod of the thimble cylinder 602 is rotatably connected to a rotary thimble 603. The thimble mechanism 6 can cooperate with the rotary drive mechanism 5 to complete the clamping and fixing of the sprocket positioning assembly 9 and the metal blank 11. When the piston rod of the thimble cylinder 602 extends forward, it can drive the rotary thimble 603 to move forward and make the tapered tip at its front end accurately insert into the thimble slot 907. Under the action of the extrusion force, the sprocket positioning assembly 9 can clamp the two metal blanks 11, thus completing the fixing of the two metal blanks 11, so that the sprocket positioning assembly 9 and the two metal blanks 11 can rotate synchronously with the plug-in block 505.

[0054] As Figures 1-12As shown in the figure, an automatic hobbing mechanism 7 for hobbing the metal blank 11 is fixedly installed on the inner surface of the top of the frame 101. After the metal blank 11 is hobbed, a metal sprocket 10 is formed. The automatic hobbing mechanism 7 includes a lifting cylinder 701 fixedly installed on the inner surface of the top of the frame 101. The bottom end of the piston rod of the lifting cylinder 701 is fixedly connected with a fixing frame 702. A hobbed shaft 703 is rotatably connected to the bottom of the fixing frame 702. A second driving motor 704 is installed inside the fixing frame 702. Belt pulleys 705 are fixedly installed at one end of the hobbed shaft 703 and the output end of the second driving motor 704. A transmission steel belt 706 is installed between the two belt pulleys 705. The automatic hobbing mechanism 7 is mainly used for automatically hobbing the metal blank 11. When the metal blank 11 moves to the accurate position, the lifting cylinder 701 will drive the fixing frame 702 to slowly descend, and the second driving motor 704 will also drive the hobbed shaft 703 to rotate through the belt pulleys 705 and the transmission steel belt 706. During the slow contact between the hobbed shaft 703 and the metal blank 11, the rotating hobbed shaft 703 will hob the two uniformly rotating metal blanks 11 until the metal sprocket 10 is finally formed. After the sprocket is processed and formed, the automatic hobbing mechanism 7 will automatically reset upward. After a new set of metal blanks 11 moves into place, the automatic hobbing mechanism 7 will perform continuous automatic processing.

[0055] As Figures 13-16 shown in the figure, the device further includes a sprocket positioning assembly 9 for clamping the metal blank 11. The sprocket positioning assembly 9 includes a first docking assembly 901 and a second docking assembly 902 that are inserted into each other. A plugging slot 903 is opened at the center of one end of the first docking assembly 901. A magnetic block 904 for adsorbing and fixing the second docking assembly 902 is installed in the plugging slot 903. A rotating plugging slot 905 is opened on the outside of the first docking assembly 901. Two centrally symmetric inclined blocking blocks 906 are provided on the periphery of the rotating plugging slot 905. A thimble slot 907 is opened at the center of the outside of the second docking assembly 902. The sprocket positioning assembly 9 is mainly used for quickly clamping and fixing the two metal blanks 11. A rotating plugging slot 905 is opened on the outside of the first docking assembly 901, and two centrally symmetric inclined blocking blocks 906 are provided in the rotating plugging slot 905. The outer end face of the inclined blocking block 906 is of an inclined structure. Therefore, when the plugging block 505 at the output end of the servo motor 504 slowly moves into the rotating plugging slot 905, the rotating plugging block 505 will slowly contact the outer inclined end face of the inclined blocking block 906 and can be smoothly plugged. During the subsequent rotation process, the plugging block 505 will abut against the contact surface of the inclined blocking block 906. During this process, the rotating thimble 603 at the front end of the thimble mechanism 6 will also move forward, and the conical tip at its front end will accurately insert into the thimble slot 907. Under the action of the front and rear extrusion forces, the entire sprocket positioning assembly 9 and the two metal blanks 11 can be synchronously driven to rotate, so as to cooperate with the automatic hobbing mechanism 7 to complete the hobbing process of the metal blank 11.

[0056] During processing, two metal blanks 11 are sleeved on the outer wall of the first docking component 901, and one end of the second docking component 902 is inserted into the insertion slot 903, and pre-clamping and fixing of the two metal blanks 11 are formed by a magnetic attraction fixing method.

[0057] A processing method for a processing device of a sprocket for an automotive transmission includes the following specific steps:

[0058] Step 1: Pre-clamp and fix the metal blank 11 to be processed by using the sprocket positioning component 9. When clamping, it is necessary to make the hobbing parts of the two metal blanks 11 fit together;

[0059] Step 2: Place the sprocket positioning component 9 with the clamped metal blank 11 in the placement groove 203. Through continuous placement, the sprocket positioning component 9 rolls onto the feeding rack 202 and is arranged in sequence;

[0060] Step 3: Start the first driving motor 303, and then drive the conveyor belt 304 to operate by using the two conveyor rollers 302. At this time, the sprocket positioning component 9 at the bottom on the feeding rack 202 will naturally roll into the positioning groove 305 on the conveyor belt 304 and move directionally under the conveying action of the conveyor belt 304;

[0061] Step 4: When the sprocket positioning component 9 moves to the hobbing processing area between the thimble mechanism 6 and the rotary driving mechanism 5, the thimble mechanism 6 and the rotary driving mechanism 5 will work synchronously to complete the clamping and fixing of the sprocket positioning component 9, and the rotary driving mechanism 5 will drive the sprocket positioning component 9 and the corresponding two metal blanks 11 to rotate at a constant speed;

[0062] Step 5: At this time, the lifting cylinder 701 will drive the fixed frame 702 to slowly descend, and the second driving motor 704 will drive the hobbing shaft 703 to rotate through the belt pulley 705 and the transmission steel belt 706, and then hob the two metal blanks 11 rotating at a constant speed until the metal sprocket 10 is finally formed;

[0063] Step 6: After processing is completed, the thimble mechanism 6 and the rotary driving mechanism 5 are reset, and the conveyor belt 304 drives it to continue to move. When it moves to the end of the conveyor belt 304, under the action of gravity, the formed two metal sprockets 10 will roll together with the sprocket positioning component 9 through the discharge port 105 to the designated collection position.

[0064] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A processing device for a sprocket for an automobile gearbox, comprising a device body (1), the device body (1) comprising a frame (101), a protective door (102) being slidably connected to the top of the front end of the frame (101), and a front cover plate (103) being installed at the bottom of the front end of the frame (101), characterized in that: It also includes a sprocket positioning assembly (9) for clamping the metal blank (11), a discharge port (105) is provided on one side of the support platform in the middle of the frame (101), a feeding mechanism (2) is installed on the other side of the frame (101), the feeding mechanism (2) includes a feeding port (201) opened on one side of the frame (101), a feeding frame (202) is fixedly installed on the inner side of the feeding port (201), and a placement groove (203) corresponding to the feeding frame (202) is fixedly connected to the outer side of the feeding port (201); A servo conveying mechanism (3) is fixedly installed on the top of the middle supporting platform of the frame (101), and the servo conveying mechanism (3) comprises a conveying frame (301) fixed on the middle supporting platform of the frame (101), both sides of the center of the conveying frame (301) are rotatably connected to conveying rollers (302), a first driving motor (303) connected to the corresponding conveying rollers (302) is installed on one side of the rear end of the conveying frame (301), a conveying belt (304) is installed between the two conveying rollers (302), and a positioning groove (305) is provided on the circumference of the conveying belt (304) for driving the sprocket positioning assembly (9) and the metal blank (11) to move in a directional manner; The frame (101) is also fixedly connected to a support frame (4), a rotary drive mechanism (5) is fixedly installed on the top of the support frame (4), and a pin mechanism (6) is installed on the rear side of the servo transmission mechanism (3), and the pin mechanism (6) can cooperate with the rotary drive mechanism (5) to complete the clamping and fixing of the sprocket positioning assembly (9) clamping the metal blank (11), and the rotary drive mechanism (5) drives the sprocket positioning assembly (9) and the metal blank (11) to rotate; An automatic gear hobbing mechanism (7) for gear hobbing of a metal blank (11) is fixedly mounted on the inner surface of the top of the frame (101); the metal blank (11) is formed into a metal sprocket (10) after gear hobbing; the automatic gear hobbing mechanism (7) comprises a lifting cylinder (701) fixedly mounted on the inner surface of the top of the frame (101); the bottom end of the piston rod of the lifting cylinder (701) is fixedly connected to a fixing frame (702); the bottom of the fixing frame (702) is rotatably connected to a gear hobbing shaft (703); a second drive motor (704) is mounted inside the fixing frame (702); a pulley (705) is fixedly mounted on one end of the gear hobbing shaft (703) and the output end of the second drive motor (704); a transmission steel belt (706) is mounted between the two pulleys (705); The sprocket positioning component (9) comprises a first docking component (901) and a second docking component (902) which are plugged into each other, a plugging slot (903) is provided at the center of one end of the first docking component (901), a magnetic block (904) for adsorbing and fixing the second docking component (902) is installed in the plugging slot (903), a rotating slot (905) is provided on the outside of the first docking component (901), two centrally symmetrical oblique blocks (906) are provided on the circumference of the rotating slot (905), and a pin slot (907) is provided at the center of the outside of the second docking component (902); A cutting fluid spraying mechanism (8) for spraying cutting fluid is also installed on the top of the support frame (4).

2. The processing device for a sprocket for an automobile transmission according to claim 1, characterized in that: A liquid storage tank (104) for storing cutting fluid is also installed inside the frame (101), and a main controller (106) is installed on one side of the outer wall of the frame (101).

3. The processing device for a sprocket for a vehicle transmission according to claim 1, characterized in that: The rotary drive mechanism (5) comprises a fixed slide (501) fixed to the top of the support frame (4), a movable slide (502) being slidably connected to the fixed slide (501), a push cylinder (503) corresponding to the movable slide (502) being mounted at the front end of the fixed slide (501), a servo motor (504) being further mounted on the movable slide (502), and a plug-in block (505) being fixedly mounted at the output end of the servo motor (504).

4. The processing device for a sprocket for a vehicle transmission according to claim 1, characterized in that: The ejector mechanism (6) comprises a support column (601) fixed on a support platform in the middle of the frame (101), an ejector cylinder (602) is mounted on the top of the support column (601), and a rotating ejector (603) is rotatably connected to the front end of the piston rod of the ejector cylinder (602).

5. The processing device for a sprocket for a vehicle transmission according to claim 1, characterized in that: During processing, the two metal blanks (11) are sleeved on the outer wall of the first docking component (901), and one end of the second docking component (902) is inserted into the insertion groove (903), so that the two metal blanks (11) are pre-clamped and fixed by magnetic attraction.

6. The processing method of the processing device for the sprocket for the automobile transmission according to any one of claims 1 to 5, characterized in that: The specific steps include: Step 1: Pre-clamping and fixing the metal blanks (11) to be processed by using the sprocket positioning assembly (9), and during clamping, the hobbing parts of the two metal blanks (11) need to be in contact with each other; Step 2: placing the sprocket positioning assembly (9) clamped with the metal blank (11) in the placement groove (203), and rolling the sprocket positioning assembly (9) onto the feed rack (202) by continuous placement, and arranging them in sequence; Step 3: Start the first driving motor (303), and then use the two conveying rollers (302) to drive the conveyor belt (304) to operate. At this time, the sprocket positioning assembly (9) located at the bottom end of the feed rack (202) will naturally roll into the positioning groove (305) on the conveyor belt (304), and move in a directional manner under the conveying action of the conveyor belt (304); Step 4: When the sprocket positioning assembly (9) moves to the gear hobbing processing area between the ejector mechanism (6) and the rotary drive mechanism (5), the ejector mechanism (6) and the rotary drive mechanism (5) work synchronously to complete the clamping and fixing of the sprocket positioning assembly (9), and the rotary drive mechanism (5) drives the sprocket positioning assembly (9) and the corresponding two metal blanks (11) to rotate at a constant speed; Step 5: At this time, the lifting cylinder (701) drives the fixed frame (702) to slowly descend, and the second driving motor (704) drives the gear hobbing shaft (703) to rotate through the pulley (705) and the transmission steel belt (706), thereby performing gear hobbing on the two metal blanks (11) rotating at a uniform speed, until a metal sprocket (10) is finally formed; Step 6: After the processing is completed, the ejector mechanism (6) and the rotary drive mechanism (5) are reset and driven by the conveyor belt (304) to continue moving. When they move to the end of the conveyor belt (304), under the action of gravity, the two formed metal sprockets (10) will roll down to the designated collection position through the discharge port (105) together with the sprocket positioning assembly (9).

Images