Machining device and method for chain wheel for automobile gearbox

Abstract

The invention discloses a machining device of a chain wheel for an automobile gearbox and a machining method of the machining device, and belongs to the technical field of chain wheel machining. The machining device of the chain wheel for the automobile gearbox comprises a device body, and a servo conveying mechanism is fixedly installed at the top of a supporting platform in the middle of a rack; a supporting frame is further fixedly connected to the rack, a rotary driving mechanism is fixedly installed on the top of the supporting frame, and an ejector pin mechanism is installed on the rear side of the servo conveying mechanism. An automatic gear hobbing mechanism used for hobbing of metal blanks is fixedly mounted on the inner surface of the top of the rack, the metal blanks are subjected to hobbing to form metal chain wheels, and a cutting fluid spraying mechanism for spraying cutting fluid is further mounted on the top of the supporting frame. By designing the feeding mechanism, the servo conveying mechanism, the rotary driving mechanism, the ejector pin mechanism and the automatic gear hobbing mechanism, continuous automatic gear hobbing machining of a large number of sprockets can be completed through the compact and reliable structural design.

Description

Technical Field

[0001] The invention belongs to the technical field of sprocket processing, and in particular relates to a processing device and a processing method of a sprocket for an automobile gearbox. Background Art

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

[0003] Gear hobbing is the most common processing method in the production of automobile transmission sprockets. The blank is continuously cut through gear hobbing to eventually form a sprocket. There are many different types of gear hobbing processing devices on the market, but the structural design of most processing devices has defects. When performing gear hobbing, existing devices can usually only process a single blank. In actual operation, the operator is required to clamp the blank individually on the rotating chuck and fix it with a nut. Only after the fixation is completed can the gear hobbing mechanism be used for gear hobbing. After the processing is completed, manual unloading is still required, and then a new blank is replaced, and this cycle is repeated. This processing method is not only time-consuming and labor-intensive, but also seriously affects the overall production and processing progress and processing efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a processing device and a processing method for a sprocket for an automobile gearbox.

[0005] The technical solution adopted to solve the above technical problems is: a processing device for a sprocket for an automobile gearbox, comprising a device body, the device body comprising a frame, a protective door is slidably connected to the top of the front end of the frame, a front cover plate is installed at the bottom of the front end of the frame, and also comprises a sprocket positioning assembly for clamping a metal blank, a discharge port is provided on one side of a support platform in the middle of the frame, a feeding mechanism is installed on the other side of the frame, and a servo transmission mechanism is fixedly installed on the top of the support platform in the middle of the frame; The frame is also fixedly connected to a support frame, a rotary drive mechanism is fixedly installed on the top of the support frame, and a ejector mechanism is installed on the rear side of the servo transmission mechanism. The ejector mechanism can cooperate with the rotary drive mechanism to complete the clamping and fixing of the sprocket positioning assembly clamping the metal blank, and the rotary drive mechanism drives the sprocket positioning assembly and the metal blank to rotate; An automatic gear hobbing mechanism for gear hobbing of metal blanks is fixedly installed on the inner surface of the top of the frame. The metal blanks are formed into metal sprockets after gear hobbing. A cutting fluid spraying mechanism for spraying cutting fluid is also installed on the top of the support frame.

[0006] 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.

[0007] Through the above technical scheme, the cutting fluid spraying mechanism is composed of a liquid extraction pipe, a micro pump and a spraying pipe. The bottom end of the liquid extraction pipe passes through the middle supporting platform of the frame and extends to the bottom of the liquid storage tank. When the micro pump is working, it can extract the cutting fluid in the liquid storage tank, and then spray it to the gear hobbing processing position through the spraying pipe, so as to provide lubrication during the gear hobbing process and realize the cooling and heat dissipation of the gear hobbing shaft; the main controller is used to control the working state and working speed of the transmission mechanism, the rotary drive mechanism, the ejector mechanism and the automatic gear hobbing mechanism, and the corresponding parameters can be adjusted according to actual needs.

[0008] Furthermore, the feeding mechanism includes a feeding port opened on one side of the frame, a feeding rack is fixedly installed on the inner side of the feeding port, and a placement groove corresponding to the feeding rack is fixedly connected to the outer side of the feeding port.

[0009] Through the above technical scheme, the feeding mechanism is mainly used for loading and guiding the sprocket positioning assembly and the metal blank. During processing, the operator or the automatic robot completes the clamping between the metal blank and the sprocket positioning assembly, and then the clamped sprocket positioning assembly can be placed horizontally in the placement groove. The sprocket positioning assemblies arranged in sequence will roll along the placement groove to the inclined feeding rack for subsequent material reception and directional transmission by the servo transmission mechanism.

[0010] Furthermore, the servo conveying mechanism includes a conveying frame fixed on a supporting platform in the middle of the frame, and conveying rollers are rotatably connected to both sides of the center of the conveying frame. A first driving motor connected to the corresponding conveying roller is installed on one side of the rear end of the conveying frame, and a conveyor belt is installed between the two conveying rollers. The circumferential side of the conveyor belt is provided with positioning grooves for driving the sprocket positioning assembly and the directional movement of the metal billet.

[0011] Through the above technical scheme, the servo transmission mechanism is mainly used for the directional and precise transmission of the sprocket positioning assembly. When working, the first drive motor drives the corresponding transmission roller shaft to rotate, and then drives the conveyor belt to move. Since there are multiple sets of positioning grooves on the conveyor belt, when the conveyor belt is running, the sprocket positioning assembly located on the feed rack will naturally roll onto the corresponding positioning groove, and be driven by the conveyor belt to move in a directional manner, so that the sprocket positioning assembly clamped with the metal blank can be accurately transmitted to the gear hobbing processing position. After the gear hobbing processing is completed, the conveyor belt will continue to drive it to move to the end. When it moves to the end of the conveyor belt, under the action of gravity, the two formed metal sprockets will roll down to the designated collection position together with the sprocket positioning assembly through the discharge port.

[0012] Furthermore, the rotary drive mechanism includes a fixed slide fixed to the top of the support frame, a movable slide is slidably connected to the fixed slide, a push cylinder corresponding to the movable slide is installed at the front end of the fixed slide, a servo motor is also installed on the movable slide, and a plug-in block is fixedly installed at the output end of the servo motor.

[0013] Through the above technical scheme, when the sprocket positioning assembly clamped with the metal blank is accurately moved to the gear hobbing processing position, the piston rod of the push cylinder will extend outward, and then push the movable slide to move backward, so that the plug-in block at the output end of the servo motor slowly contacts the sprocket positioning assembly and is accurately plugged into the plug-in slot. In conjunction with the ejector mechanism, the sprocket positioning assembly can be clamped and fixed. At the same time, the servo motor can also drive the sprocket positioning assembly and the metal blank to rotate slowly through the plug-in block, so as to cooperate with the automatic gear hobbing mechanism to perform gear hobbing on the metal blank.

[0014] Furthermore, the ejector mechanism comprises a support column fixed on a support platform in the middle of the frame, an ejector cylinder is installed on the top of the support column, and a rotating ejector is rotatably connected to the front end of the piston rod of the ejector cylinder.

[0015] Through the above technical solution, the ejector mechanism can cooperate with the rotary drive mechanism to complete the clamping and fixing of the sprocket positioning assembly and the metal blank. When the piston rod of the ejector cylinder extends forward, it can drive the rotating ejector to move forward and make the conical tip at the front end accurately inserted into the ejector groove. Under the action of the extrusion force, the sprocket positioning assembly can clamp the two metal blanks, thereby completing the fixation of the two metal blanks, so that the sprocket positioning assembly and the two metal blanks can rotate synchronously with the plug-in block.

[0016] Furthermore, the automatic gear hobbing mechanism includes a lifting cylinder fixedly mounted on the inner surface of the top of the frame, the bottom end of the lifting cylinder piston rod is fixedly connected to a fixed frame, the bottom of the fixed frame is rotatably connected to a gear hobbing shaft, a second drive motor is installed inside the fixed frame, one end of the gear hobbing shaft and the output end of the second drive motor are both fixedly mounted with pulleys, and a transmission steel belt is installed between the two pulleys.

[0017] Through the above technical scheme, the automatic gear hobbing mechanism is mainly used for automatic gear hobbing processing of metal billets. When the metal billet moves to the exact position, the lifting cylinder will drive the fixed frame to slowly descend, and the second drive motor will also drive the gear hobbing shaft to rotate through the pulley and the transmission steel belt. During the process of the gear hobbing shaft slowly contacting the metal billet, the rotating gear hobbing shaft will hob the two metal billets rotating at a uniform speed until a metal sprocket is finally formed. After the sprocket is processed and formed, the automatic gear hobbing mechanism will automatically reset upward. After a new group of metal billets are moved into place, the automatic gear hobbing mechanism will perform continuous automatic processing.

[0018] Furthermore, the sprocket positioning assembly includes a first docking assembly and a second docking assembly that are plugged into each other, a plug-in groove is provided at the center of one end of the first docking assembly, a magnetic block for adsorbing and fixing the second docking assembly is installed in the plug-in groove, a rotating slot is provided on the outer side of the first docking assembly, two centrally symmetrical oblique blocks are provided on the circumference of the rotating slot, and a pin groove is provided at the center of the outer side of the second docking assembly.

[0019] Through the above technical scheme, the sprocket positioning assembly is mainly used for the quick clamping and fixing of two metal blanks. A rotating slot is provided on the outside of the first docking assembly, and two centrally symmetrical oblique blocks are provided in the rotating slot. The outer end faces of the oblique blocks are inclined. Therefore, when the plug-in block at the output end of the servo motor slowly moves into the rotating slot, the plug-in block in the rotating state will slowly contact the outer inclined end face of the oblique block and can be smoothly plugged in. In the subsequent rotation process, the plug-in block will be tightly pressed against the contact surface of the oblique block. During this process, the rotating ejector at the front end of the ejector mechanism will also move forward, and the conical tip at the front end will be accurately inserted into the ejector groove. Under the action of the front and rear extrusion forces, the entire sprocket positioning assembly and the two metal blanks can be synchronously driven to rotate synchronously, so that the automatic gear hobbing mechanism can be cooperated to complete the gear hobbing processing of the metal blanks.

[0020] Furthermore, 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 insertion groove, so that the two metal blanks are pre-clamped and fixed by magnetic attraction.

[0021] A processing method of a sprocket processing device for an automobile gearbox comprises the following specific steps: Step 1: Pre-clamp and fix the metal blank to be processed using the sprocket positioning assembly. When clamping, the hobbing parts of the two metal blanks need to fit together; Step 2: Place the sprocket positioning assembly with the metal blank clamped in the placement groove, and roll the sprocket positioning assembly onto the feed rack through continuous placement, and arrange them in sequence; Step 3: Start the first drive motor, and then use the two conveyor rollers to drive the conveyor belt to operate. At this time, the sprocket positioning assembly at the bottom of the feed rack will naturally roll into the positioning groove on the conveyor belt, and move in a directional manner under the conveying action of the conveyor belt; Step 4: When the sprocket positioning assembly moves to the gear hobbing processing area between the ejector mechanism and the rotary drive mechanism, the ejector mechanism and the rotary drive mechanism will work synchronously to complete the clamping and fixing of the sprocket positioning assembly, and the rotary drive mechanism will drive the sprocket positioning assembly and the corresponding two metal blanks to rotate at a uniform speed; Step 5: At this time, the lifting cylinder will drive the fixed frame to slowly descend, and the second drive motor will drive the gear hobbing shaft to rotate through the pulley and the transmission steel belt, and then perform gear hobbing on the two metal blanks rotating at a uniform speed until a metal sprocket is finally formed; Step 6: After the processing is completed, the ejector mechanism and the rotary drive mechanism are reset and driven by the conveyor belt to continue moving. When they move to the end of the conveyor belt, under the action of gravity, the two formed metal sprockets will roll down to the designated collection position through the discharge port together with the sprocket positioning assembly.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention, by designing a feeding mechanism, a servo transmission mechanism, a rotary drive mechanism, a pin mechanism and an automatic gear rolling mechanism, has a compact and reliable structural design that can complete the continuous automated gear rolling processing of large quantities of chain teeth; (2) The present invention, by designing a sprocket positioning assembly, in conjunction with a rotary drive mechanism and a pin mechanism, can complete the pre-clamping and fixing of the blank, thereby 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) The present invention, by designing automated production and processing equipment, does not require manual continuous loading and unloading operations, and manual labor only needs to complete the clamping and placement operations, which has low technical requirements and also improves the overall production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a first-view structural diagram of the internal structure of the device of the present invention; Figure 4 is a second-view structural diagram of the interior of the device of the present invention; Figure 5 It is a right side view of the present invention; Figure 6 yes Figure 5 Middle AA section view; Figure 7 It is a first-view structural diagram of the main part of the present invention; Figure 8 It is a second perspective structural diagram of the main part of the present invention; Fig. 9 is a cross-sectional view of the main body of the present invention; Fig.10 is a schematic structural diagram of the servo transmission mechanism of the present invention; Fig.11 It is a structural schematic diagram of the rotary drive mechanism of the present invention; Fig.12 It is a structural schematic diagram of the automatic gear hobbing mechanism of the present invention; Fig.13 It is a schematic structural diagram of the sprocket positioning assembly of the present invention in an assembled state; Fig.14 is a cross-sectional view of the sprocket positioning assembly of the present invention; Fig.15 It is a schematic diagram of the structure of the metal sprocket of the present invention; Fig.16 It is a structural schematic diagram of the metal blank of the present invention.

[0024] Figure numerals: 1. device body; 101. frame; 102. protective door; 103. front cover; 104. liquid storage tank; 105. discharge port; 106. main controller; 2. feeding mechanism; 201. feeding port; 202. feeding rack; 203. placement slot; 3. servo transmission mechanism; 301. transmission rack; 302. transmission roller; 303. first drive motor; 304. conveyor belt; 305. positioning groove; 4. support frame; 5. rotation drive mechanism; 501. fixed slide; 502. movable slide; 503. push cylinder; 504. servo motor; 50 5. Plug-in block; 6. Ejector mechanism; 601. Support column; 602. Ejector cylinder; 603. Rotating ejector; 7. Automatic gear hobbing mechanism; 701. Lifting cylinder; 702. Fixed frame; 703. Gear hobbing shaft; 704. Second drive motor; 705. 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. Rotating slot; 906. Oblique stopper; 907. Ejector slot; 10. Metal sprocket; 11. Metal blank. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0026] like Figure 1-Figure 16 As shown, a processing device for a sprocket for an automobile gearbox of this embodiment includes a device body 1, the device 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 also installed inside the frame 101, a main controller 106 is installed on one side of the outer wall of the frame 101, and a cutting fluid spraying mechanism 8 for spraying cutting fluid is also installed on the top of the support frame 4. The cutting fluid spraying mechanism 8 consists of a liquid extraction pipe, a micro pump and a spraying pipe The bottom end of the liquid extraction tube passes through the middle supporting platform of the frame 101 and extends to the bottom of the liquid storage tank 104. When the micro pump is working, it can extract the cutting fluid in the liquid storage tank 104, and then spray it to the gear hobbing processing position through the spray pipe, so as to provide lubrication during the gear hobbing process and realize the cooling and heat dissipation of the gear hobbing shaft 703; the main controller 106 is used to control the working state and working speed of the transmission mechanism 3, the rotation drive mechanism 5, the ejector mechanism 6 and the automatic gear hobbing mechanism 7, and the corresponding parameters can be adjusted according to actual needs.

[0027] like Figure 2-Figure 3 As shown, a discharge port 105 is provided on one side of the central support platform of the frame 101, and 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 rack 202 is fixedly installed on the inner side of the feeding port 201, and a placement groove 203 corresponding to the feeding rack 202 is fixedly connected to the outer side of the feeding port 201. The feeding mechanism 2 is mainly used for loading and guiding 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 automatic manipulator, and then the clamped sprocket positioning assembly 9 can be horizontally placed in the placement groove 203, and the sprocket positioning assemblies 9 arranged in sequence will roll along the placement groove 203 to the inclined feeding rack 202, so as to facilitate the subsequent material receiving and directional transmission of the servo conveying mechanism 3.

[0028] like Figure 6-Figure 10As shown, a servo transmission mechanism 3 is fixedly installed on the top of the middle support platform of the frame 101; the servo transmission mechanism 3 includes a transmission frame 301 fixed on the middle support platform of the frame 101, and both sides of the center of the transmission frame 301 are rotatably connected with transmission rollers 302, and a first drive motor 303 connected to the corresponding transmission roller 302 is installed on one side of the rear end of the transmission frame 301, and a conveyor belt 304 is installed between the two transmission rollers 302. The circumferential side of the conveyor belt 304 is provided with a positioning groove 305 for driving the sprocket positioning assembly 9 and the metal blank 11 to move in a directional manner. The servo transmission mechanism 3 is mainly used for the directional and precise transmission of the sprocket positioning assembly 9. When working, the corresponding transmission roller is driven by the first drive motor 303. 302 rotates, thereby driving the conveyor belt 304 to move. Since a plurality of positioning grooves 305 are provided on the conveyor belt 304, when the conveyor belt 304 is running, the sprocket positioning assembly 9 located on the feed rack 202 will naturally roll onto the corresponding positioning groove 305, and be driven by the conveyor belt 304 to move in a directional manner, so that the sprocket positioning assembly 9 clamped with the metal blank 11 can be accurately conveyed to the gear hobbing processing position. After the gear hobbing processing is completed, the conveyor belt 304 will continue to drive it to move toward the end. When it moves to the end of the conveyor belt 304, under the action of gravity, the two formed metal sprockets 10 will roll together with the sprocket positioning assembly 9 through the discharge port 105 to the designated collection position.

[0029] like Figure 6-Figure 11 As shown, the frame 101 is also fixedly connected to a support frame 4, and a rotation drive mechanism 5 is fixedly installed on the top of the support frame 4. The rotation drive mechanism 5 includes a fixed slide 501 fixed to the top of the support frame 4, and a movable slide 502 is slidably connected to the fixed slide 501. A push cylinder 503 corresponding to the movable slide 502 is installed at the front end of the fixed slide 501. A servo motor 504 is also installed on the movable slide 502, and a plug-in block 505 is fixedly installed at the output end of the servo motor 504. When the sprocket positioning assembly 9 clamped with the metal blank 11 is accurately moved to After the gear hobbing processing position is reached, the piston rod of the push cylinder 503 will extend outward, and then push the movable slide 502 to move backward, so that the plug-in block 505 at the output end of the servo motor 504 slowly contacts the sprocket positioning assembly 9 and is accurately plugged into the plug-in groove 903. In conjunction with the ejector mechanism 6, the sprocket positioning assembly 9 can be clamped and fixed. 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, so as to cooperate with the automatic gear hobbing mechanism 7 to perform gear hobbing on the metal blank 11.

[0030] like Figure 6-Figure 9As shown, a pin mechanism 6 is installed at 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; the pin mechanism 6 includes a support column 601 fixed on the support platform in the middle of the frame 101, and a pin cylinder 602 is installed on the top of the support column 601. The front end of the piston rod of the pin cylinder 602 is rotatably connected to a rotating pin 603. The mechanism 6 can cooperate with the rotating 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 ejector cylinder 602 extends forward, it can drive the rotating ejector 603 to move forward and make the conical tip of its front end accurately inserted into the ejector groove 907. Under the action of the extrusion force, the sprocket positioning assembly 9 can clamp the two metal blanks 11, thereby completing the fixation 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.

[0031] like Figure 1-Figure 12 As shown, an automatic gear hobbing mechanism 7 for gear hobbing of a metal blank 11 is fixedly installed 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 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 to a fixed frame 702. The bottom of the fixed frame 702 is rotatably connected to a gear hobbing shaft 703. A second drive motor 704 is installed inside the fixed frame 702. A pulley 705 is fixedly installed 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 installed between the two pulleys 705. Mechanism 7 is mainly used for automatic gear hobbing of metal blanks 11. When the metal blanks 11 move to the exact position, the lifting cylinder 701 will drive the fixed frame 702 to slowly descend, and the second drive motor 704 will also drive the gear hobbing shaft 703 to rotate through the pulley 705 and the transmission steel belt 706. When the gear hobbing shaft 703 slowly contacts the metal blanks 11, the rotating gear hobbing shaft 703 will perform gear hobbing on the two metal blanks 11 rotating at a uniform speed until a metal sprocket 10 is finally formed. After the sprocket is processed and formed, the automatic gear hobbing mechanism 7 will automatically reset upward. After a new group of metal blanks 11 are moved into place, the automatic gear hobbing mechanism 7 will perform continuous automatic processing.

[0032] like Figure 13-Figure 16As shown, the device also includes a sprocket positioning component 9 for clamping the metal blank 11, the sprocket positioning component 9 includes a first docking component 901 and a second docking component 902 that are plugged into each other, a plug-in 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 plug-in slot 903, a rotating slot 905 is provided on the outer side of the first docking component 901, two centrally symmetrical oblique stoppers 906 are provided on the circumference of the rotating slot 905, and a pin slot 907 is provided at the center of the outer side of the second docking component 902. The sprocket positioning component 9 is mainly used for the quick clamping and fixing of two metal blanks 11, a rotating slot 905 is provided on the outer side of the first docking component 901, and two centrally symmetrical oblique stoppers 906 are provided in the rotating slot 905 The symmetrical oblique stopper 906 has an inclined outer end surface. Therefore, when the plug-in block 505 at the output end of the servo motor 504 slowly moves into the rotating slot 905, the plug-in block 505 in the rotating state will slowly contact the outer inclined end surface of the oblique stopper 906 and can be smoothly plugged in. In the subsequent rotation process, the plug-in block 505 will be tightly pressed against the contact surface of the oblique stopper 906. During this process, the rotating ejector pin 603 at the front end of the ejector pin mechanism 6 will also move forward, and the conical tip at the front end will be accurately inserted into the ejector pin groove 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 synchronously, thereby cooperating with the automatic gear hobbing mechanism 7 to complete the gear hobbing processing of the metal blank 11.

[0033] 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.

[0034] A processing method of a sprocket processing device for an automobile gearbox comprises the following specific steps: Step 1: Pre-clamp and fix the metal blank 11 to be processed by using the sprocket positioning assembly 9, and the hobbing parts of the two metal blanks 11 need to be in contact with each other during clamping; Step 2: Place the sprocket positioning assembly 9 clamped with the metal blank 11 in the placement groove 203, and place the sprocket positioning assembly 9 continuously so that the sprocket positioning assembly 9 rolls onto the feed rack 202 and is arranged 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 at the bottom 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 uniform speed; 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 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 the 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 are 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.

[0035] The above description 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 a metal blank (11); a discharge port (105) is provided on one side of the middle support platform of the frame (101); a feeding mechanism (2) is installed on the other side of the frame (101); and a servo transmission mechanism (3) is fixedly installed on the top of the middle support platform of the frame (101); 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. A cutting fluid spraying mechanism (8) for spraying cutting fluid is also mounted 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 feeding mechanism (2) comprises a feeding port (201) opened on one side of the frame (101), a feeding frame (202) being fixedly mounted on the inner side of the feeding port (201), and a placement groove (203) corresponding to the feeding frame (202) being fixedly connected to the outer side of the feeding port (201).

4. The processing device for a sprocket for a vehicle transmission according to claim 1, characterized in that: The servo conveying mechanism (3) comprises a conveying frame (301) fixed on a supporting platform in the middle of a frame (101), conveying rollers (302) are rotatably connected to both sides of the center of the conveying frame (301), a first driving motor (303) connected to a corresponding conveying roller (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.

5. 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).

6. 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).

7. The processing device for a sprocket for a vehicle transmission according to claim 1, characterized in that: 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 an output end of the second drive motor (704); and a transmission steel belt (706) is mounted between the two pulleys (705).

8. The processing device for a sprocket for an automobile transmission according to claim 1, characterized in that: The sprocket wheel positioning assembly (9) comprises a first docking assembly (901) and a second docking assembly (902) which are plugged into each other, a plugging slot (903) is provided 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 slot (905) is provided on the outside of the first docking assembly (901), two centrally symmetrical oblique stoppers (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 assembly (902).

9. The processing device for a sprocket for a vehicle transmission according to claim 8, 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.

10. The processing method of the processing device for the sprocket for the automobile transmission according to any one of claims 1 to 9, 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).

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