Intelligent finish machining production line for automobile starter shell

Abstract

The invention relates to an intelligent finish machining production line for an automobile starter shell in the field of metal combination machining. The intelligent finish machining production line comprises a conveying belt, a finish machining device, a mechanical arm, a conveying disc and a finish milling mechanism. Wherein the finish milling mechanism comprises a plurality of finish milling cutters which are uniformly distributed in the circumferential direction, so that the shell is uniformly stressed in the horizontal direction, the mode that the shell is milled one by one by using the milling cutters when the radiating fins of the traditional shell are machined is replaced, the probability of horizontal deviation and vibration of the shell during milling is reduced, and the forming quality and the forming consistency of the radiating fins are improved; meanwhile, an annular barrel and a first hydraulic cylinder are matched, so that a plurality of finish milling cutters synchronously move from bottom to top, accumulation of milling chippings in a milling groove is reduced, the milling quality and the forming efficiency are improved, and the problems of complex milling control and low machining efficiency caused by a complex feeding path of a traditional single milling cutter are solved; in addition, through the pretreatment mechanism comprising a rough milling cutter and a grinding roller, the milling quality of the cooling fins is further improved.

Description

Technical Field

[0001] The present invention relates to a shell production line, in particular to an intelligent finishing production line for automobile starter shells applied to the field of metal combination processing. Background Art

[0002] The automotive starter housing finishing production line is a key link in the precision machining of cast blanks. Its core process includes high-precision milling of the motor housing cooling fins. In traditional processing technology, due to the dense and narrow groove structure between the cooling fins, a single milling cutter needs to execute a complex three-dimensional tool path to complete the surface forming. This not only greatly reduces the processing efficiency, but also generates periodic extrusion pressure due to the continuous contact between the tool and the workpiece. This extrusion pressure easily forms asymmetric stress concentration in the narrow groove, causing the blank to shift during the processing and induce high-frequency vibration. The combined effect of the two will directly destroy the milling stability, resulting in quality problems such as fin contour accuracy deviation, deterioration of surface roughness and local overcutting. This is especially significant in the processing of high-density fin arrays, becoming a key technical bottleneck restricting the improvement of the production line yield.

[0003] The existing patent with publication number CN115255953A discloses a forming device for fine processing of motor casing holes. By setting up a four-axis drill and a first gear transmission structure of the drill bit, the function of synchronous processing of multiple holes is realized, which significantly improves the efficiency of motor casing hole processing; by adopting an arc-shaped clamping plate design that matches the circular arc surface of the casing, and opening a positioning groove on the clamping surface that cooperates with the ridge of the casing, the purpose of preventing the workpiece from rotating during processing is achieved, effectively ensuring the hole processing accuracy and surface quality, and ultimately achieving the dual improvement effect of high efficiency and stability in the processing of the motor casing hole system.

[0004] The above-mentioned prior art discloses a technical solution for improving the machining stability of the housing by using an arc-shaped clamping plate, but does not solve the problem that a single milling cutter has a complicated cutting path during milling and is prone to causing deviation and vibration of the workpiece. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the single milling cutter of the existing starter housing production line has a complex cutting path during milling and is likely to cause housing deviation and vibration.

[0006] To solve the above problems, the present invention provides an intelligent finishing production line for automobile starter housings, comprising a conveyor belt; a finishing device is provided on one side of the conveyor belt, and a pair of robotic arms are provided on both sides of the finishing device, the robotic arms being used to transport the housings between the conveyor belt and the finishing device; the finishing device comprises a workbench, a fixed frame is fixedly connected to the workbench, a conveyor disc is rotatably connected to the fixed frame, the conveyor disc is connected to a drive mechanism for driving the rotation thereof, and a plurality of electrically controlled clamping seats are fixedly connected to the conveyor disc in a uniform circumference;

[0007] A fine milling mechanism is also fixedly connected to the fixed frame, which includes an annular cylinder sleeved on the outside of the outer shell, and a plurality of fine milling cutters extending to the central cavity thereof are rotatably connected in the annular cylinder. The outer ends of the fine milling cutters are fixedly connected to a passive gear located in the inner cavity of the annular cylinder, and the passive gear is engaged with a double-sided gear ring rotatably connected to the annular cylinder, and a first driving gear is engaged with the side of the double-sided gear ring away from the passive gear, and the first driving gear is fixedly connected to the output shaft of the first motor, and the first motor is fixedly connected to the upper end face of the annular cylinder; the upper end of the annular cylinder is fixedly connected to a lifting frame, the upper end of the lifting frame is fixedly connected to the movable end of the first hydraulic cylinder, and the fixed end of the first hydraulic cylinder is fixedly connected to the fixed frame.

[0008] In the above-mentioned intelligent finishing production line for automobile starter housing, the finishing milling cutters are evenly distributed circumferentially to simplify the tool path and reduce the probability of housing deviation and vibration.

[0009] As a further improvement of the present application, the precision milling cutter includes a cutter head and a cutter shaft portion connected thereto by a spline socket. The cutter head portion moves through the annular cylinder and extends into the interior of its central cavity. The end of the cutter shaft portion located on the inner side of the cutter head portion is a prismatic structure. The end of the cutter shaft portion is rotatably connected to a fixed cylinder, which is fixedly connected to the inner wall of the inner cavity of the annular cylinder, and the passive gear is fixedly connected to the cutter shaft portion.

[0010] As a further improvement of the present application, the cutter head is a horizontal round rod structure, the outer end of the cutter head is rotatably connected to a ring, the lower end of the ring is fixedly connected to a sliding column, the sliding column is slidably connected to a single-sided gear ring, the upper end face of the single-sided gear ring is provided with a plurality of guide grooves evenly distributed around the circumference, the single-sided gear ring is rotatably connected to the inner wall of the annular cylinder, the lower end of the single-sided gear ring is engaged with a second drive gear, the second drive gear extends to the bottom of the annular cylinder and is fixedly connected to the output shaft of the second motor, and the second motor is fixedly connected to the lower end face of the annular cylinder.

[0011] As a further improvement of the present application, a pretreatment mechanism arranged opposite to the fine milling mechanism is fixedly connected to the fixed frame, the pretreatment mechanism includes a lifting plate, a rough milling cutter and a grinding roller are provided under the lifting plate, the rough milling cutter and the grinding roller are both connected to a drive motor, the outer end of the drive motor is fixedly connected to a moving frame, the moving frame is movably connected to a one-way screw module installed in the lifting plate, the upper end of the lifting plate is fixedly connected to the output shaft of the rotating motor, the rotating motor is fixedly connected to a lifting cylinder rotatably connected to the lifting plate, the lifting cylinder is fixedly connected to the movable end of the second hydraulic cylinder, and the fixed end of the second hydraulic cylinder is fixedly connected to the fixed frame.

[0012] As a further improvement of the present application, the electrically controlled clamping seat includes a base fixedly connected to the conveying disk, a pair of clamping blocks are slidably connected to the base, the pair of clamping blocks pass through the rotating shaft hole of the front end cover of the shell and abut against the inner wall of the rotating shaft hole, and the pair of clamping blocks are movably connected to a bidirectional screw module fixed on the upper part of the base.

[0013] As a further improvement of the present application, the base has a cylindrical structure and its diameter is smaller than the inner diameter of the shell, the clamping block is an arc-shaped block and its outer wall slides in fit with the inner wall of the rotating shaft hole of the front end cover of the shell, the lower end of the lifting frame is fixedly connected to the fixed end of the electric push rod, and the movable end of the electric push rod is fixedly connected to the abutment plate, which has a frustum-shaped structure.

[0014] As a further improvement of the present application, a raised ring that cooperates with the ring is fixedly connected to the outer wall of the cutter head. The raised ring extends into the ring and slides against the inner wall of the ring. The guide groove is an inclined groove and its cross-section is convex, and the cross-section of the sliding column is an inverted T-shaped.

[0015] As a further improvement of the present application, an axial cavity is opened at the center position of the cutter head and the cutter shaft, and the fixed cylinder is a hollow cylinder. The fixed cylinder is fixedly connected to a liquid inlet pipe extending to the outside of the annular cylinder. The outer end of the liquid inlet pipe is fixedly connected to an annular pipe, and the annular pipe is fixedly connected to an injection pipe, which is connected to an external cutting fluid supply pump.

[0016] As a further improvement of this application, the following steps are included when used:

[0017] Step 1: Loading; the robotic arm located on one side of the finishing device transports the shell conveyed on the conveyor belt to the electric-controlled clamping seat, and then the electric-controlled clamping seat clamps and fixes the shell, and the driving mechanism drives the conveyor disc to rotate, so that the shell moves to the bottom of the pretreatment mechanism;

[0018] Step 2, preprocessing, includes the following sub-steps:

[0019] S1, start the second hydraulic cylinder and the one-way screw module above the roughing cutter, so that the roughing cutter is attached to the outer wall of the housing, and close the second hydraulic cylinder and the one-way screw module;

[0020] S2, starting the driving motor and the rotating motor connected to the roughing cutter, rotating and milling the outer wall of the housing until the set number of revolutions are completed, then turning off the driving motor and the rotating motor connected to the roughing cutter, and starting the one-way screw module above the roughing cutter again, so that the roughing cutter is separated from the housing;

[0021] S3, starting the one-way screw module and the drive motor above the grinding roller, and simultaneously starting the rotating motor to rotate and grind the outer wall of the housing until the number of grinding turns reaches the set number of turns, and then turning off the one-way screw module, the drive motor and the rotating motor above the grinding roller;

[0022] S4, start the one-way screw module above the grinding roller to separate the grinding roller from the housing, and confirm the second hydraulic cylinder again to return the lifting plate to the initial position;

[0023] Step 3: Transfer the workstation, start the drive mechanism, and the conveyor plate drives the pre-processed shell to move to the bottom of the fine milling mechanism;

[0024] Step 4: milling the heat sink fins, including the following sub-steps:

[0025] A1: Start the first hydraulic cylinder, and the lifting frame drives the annular cylinder to move to the bottom of the shell; A: Start the first motor, so that multiple fine milling cutters rotate synchronously;

[0026] A2, start the first hydraulic cylinder again, so that multiple fine milling cutters perform vertical synchronous milling on the outer wall of the shell until the shell milling is completed, turn off the first motor, and use the first hydraulic cylinder to return the annular cylinder to its initial position;

[0027] Step 5: Unloading, start the electric control clamping seat to release the shell, and use the robotic arm on the other side to transport the processed shell back to the conveyor belt.

[0028] To summarize, the present invention includes a conveyor belt, a finishing device, a robotic arm, a conveyor disk and a finishing milling mechanism; wherein, the finishing milling mechanism includes a plurality of finishing milling cutters uniformly distributed circumferentially, which perform synchronous milling on the outer wall of the outer shell, so that the outer shell is uniformly stressed in the horizontal direction, replacing the traditional method of using a milling cutter to mill the heat sink fins of the casing one by one, thereby reducing the probability of horizontal displacement and vibration of the outer shell during milling, and improving the molding quality and molding consistency of the heat sink fins; at the same time, in conjunction with the annular cylinder and the first hydraulic cylinder, a plurality of finishing milling cutters uniformly distributed circumferentially move from bottom to top, perform vertical milling on the outer wall of the outer shell, reduce the accumulation of milling debris in the milling groove, further improve the milling quality and molding efficiency, and overcome the problems of complex milling control and low processing efficiency caused by the complex cutting path of a traditional single milling cutter; in addition, the milling quality of the heat sink fins is further improved by a pretreatment mechanism including a rough milling cutter and a grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the top view of the structure of this application;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the finishing device in this application;

[0031] Figure 3 This is a schematic cross-sectional view of the finishing device in this application;

[0032] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 5 Schematic diagram of the cross-sectional structure of the fine milling cutter in this application;

[0034] Figure 6 Schematic diagram of the three-dimensional structure of the fine milling mechanism in this application;

[0035] Figure 7 This is a bottom-up perspective structural diagram of the annular cylinder in this application;

[0036] Figure 8 This is a schematic diagram of the explosion assembly structure of the annular cylinder in this application;

[0037] Figure 9 Schematic diagram of the rotation state of the fine milling cutter in this application;

[0038] Figure 10 This is a schematic diagram of the state where the fine milling cutter in this application is extended outward;

[0039] Figure 11 for Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0040] Figure 12 It is a schematic diagram of the three-dimensional structure of the pretreatment mechanism in this application.

[0041] Description of the numbers in the figure:

[0042] 1. Conveyor belt; 2. Finishing device; 3. Robotic arm; 4. Housing; 5. Workbench; 6. Fixing frame; 7. Conveyor plate; 8. Driving mechanism; 9. Electric clamping seat; 901. Base; 902. Clamping block; 903. Bidirectional screw module; 10. Finishing milling mechanism; 11. Annular cylinder; 12. Finishing milling cutter; 1201. Cutter head; 1202. Cutter shaft; 13. Passive gear; 14. Double-sided gear ring; 15. First driving gear; 16. First motor; 17. Lifting frame; 18. First hydraulic Cylinder; 19. Abutment plate; 20. Electric push rod; 21. Fixed cylinder; 22. Ring; 23. Sliding column; 24. Single-sided gear ring; 2401. Guide groove; 25. Second drive gear; 26. Second motor; 27. Liquid inlet pipe; 28. Annular pipe; 29. ​​Liquid injection pipe; 30. Pretreatment mechanism; 31. Rough milling cutter; 32. Drive motor; 33. Moving frame; 34. Lifting plate; 35. One-way screw module; 36. Rotating motor; 37. Lifting cylinder; 38. Second hydraulic cylinder; 39. Grinding roller. DETAILED DESCRIPTION

[0043] The following describes two implementation methods of the present application in detail with reference to the accompanying drawings.

[0044] The first implementation method:

[0045] Figures 1-10 The figure shows an intelligent finishing production line for automobile starter housings, comprising a conveyor belt 1; a finishing device 2 is provided on one side of the conveyor belt 1, and a pair of robotic arms 3 are provided on both sides of the finishing device 2. The robotic arms 3 are used to transport housings 4 between the conveyor belt 1 and the finishing device 2; the finishing device 2 includes a workbench 5, to which is fixedly connected a fixing frame 6, to which is rotatably connected a conveyor disc 7, which is connected to a driving mechanism 8 for driving the rotation thereof, and to which is fixedly connected a plurality of electrically controlled clamping seats 9 arranged uniformly around the circumference, which are used to clamp the housings 4;

[0046] See also Figure 4-Figure 6 , a fine milling mechanism 10 is also fixedly connected to the fixed frame 6, and the fine milling mechanism 10 includes an annular cylinder 11 sleeved on the outside of the outer shell 4, and a plurality of fine milling cutters 12 extending to its central cavity are rotatably connected in the annular cylinder 11, and the outer end of the fine milling cutter 12 is fixedly connected to a passive gear 13 located in the inner cavity of the annular cylinder 11, and the passive gear 13 is meshed with a double-sided gear ring 14 rotatably connected to the annular cylinder 11, and the double-sided gear ring 14 is meshed with a first driving gear 15 on the side away from the passive gear 13, and the first driving gear 15 is fixedly connected to the output shaft of the first motor 16, and the first motor 16 is fixedly connected to the upper end surface of the annular cylinder 11, and the first motor 16 drives the double-sided gear ring 14 to rotate through the first driving gear 15, and the double-sided gear ring 14 drives a plurality of fine milling cutters 12 evenly distributed on the circumference to rotate through the passive gear 13, and the plurality of fine milling cutters 12 synchronously mill the outer wall of the outer shell 4;

[0047] See also Figure 3 and Figure 4 The upper end of the annular cylinder 11 is fixedly connected to a lifting frame 17, and the upper end of the lifting frame 17 is fixedly connected to the movable end of the first hydraulic cylinder 18. The fixed end of the first hydraulic cylinder 18 is fixedly connected to the fixed frame 6. The first hydraulic cylinder 18 drives the annular cylinder 11 and the fine milling cutter 12 thereon to move up and down through the lifting frame 17 to vertically mill the outer wall of the outer shell 4.

[0048] For details, please refer to Figure 4 and Figure 9 When processing the shell 4, the production line includes the following steps:

[0049] Step 1: loading; the robotic arm 3 located on one side of the finishing device 2 transports the shell 4 conveyed on the conveyor belt 1 to the electric clamping seat 9, and then the electric clamping seat 9 clamps and fixes the shell 4, and the driving mechanism 8 drives the conveyor disc 7 to rotate, so that the shell 4 moves to the bottom of the finishing milling mechanism 10;

[0050] Step 2: Milling: First, start the first hydraulic cylinder 18, and the lifting frame 17 drives the annular cylinder 11 to move to the bottom of the shell 4, and then close the first hydraulic cylinder 18; then start the first motor 16 to make the multiple fine milling cutters 12 rotate synchronously. Finally, start the first hydraulic cylinder 18 again, so that the multiple fine milling cutters 12 vertically and synchronously mill the outer wall of the shell 4 until the milling of the shell 4 is completed. Then, close the first motor 16, and use the first hydraulic cylinder 18 to return the annular cylinder 11 to its initial position;

[0051] Step three, unloading, start the electric control clamping seat 9 to release the shell 4, and use the robot arm 3 on the other side to transport the processed shell 4 to the conveyor belt 1 again.

[0052] It should be noted that all electrical structures and controllers in this application are electrically connected.

[0053] Compared with the traditional starter housing processing production line, the present invention uses multiple fine milling cutters 12 with uniform distribution on the circumference to synchronously mill the outer wall of the housing 4, so that the housing 4 is uniformly stressed in the horizontal direction, replacing the traditional method of using milling cutters to mill the heat sink fins of the casing one by one, reducing the probability of horizontal displacement and vibration of the housing 4 during milling, and improving the molding quality and molding consistency of the heat sink fins; at the same time, in conjunction with the annular cylinder 11 and the first hydraulic cylinder 18, multiple fine milling cutters 12 with uniform distribution on the circumference are moved from bottom to top to vertically mill the outer wall of the housing 4, reducing the accumulation of milling debris in the milling groove, further improving the milling quality and molding efficiency, and overcoming the problems of complex milling control and low processing efficiency caused by the complex cutting path of the traditional single milling cutter.

[0054] See also Figure 4The electric-controlled clamping seat 9 includes a base 901 fixedly connected to the conveying disk 7, and a pair of clamping blocks 902 are slidably connected to the base 901. The pair of clamping blocks 902 pass through the shaft hole of the front end cover of the shell 4 and abut against the inner wall of the shaft hole. The pair of clamping blocks 902 are movably connected to a bidirectional screw module 903 fixed on the upper part of the base 901.

[0055] Specifically, the bidirectional screw module 903 drives a pair of clamping blocks 902 to move away, so that the clamping blocks 902 abut against the inner wall of the rotating shaft hole of the front end cover of the shell 4 to clamp the shell 4; when the pair of clamping blocks 902 move closer, the clamping blocks 902 break away from contact with the rotating shaft hole to release the shell 4; it should be noted that the bidirectional screw module 903 includes a bidirectional screw threadedly connected to a pair of clamping blocks 902 and a screw motor connected to the bidirectional screw through a transmission gear set. The bidirectional screw module 903 is a prior art and will not be repeated in this application.

[0056] See also Figure 4 and Figure 6 The base 901 is a cylindrical structure and its diameter is smaller than the inner diameter of the shell 4. The clamping block 902 is an arc-shaped block and its outer wall slides in contact with the inner wall of the rotating shaft hole of the front end cover of the shell 4. The lower end of the lifting frame 17 is fixedly connected to the fixed end of the electric push rod 20, and the movable end of the electric push rod 20 is fixedly connected to the abutment plate 19, which has a truncated cone structure.

[0057] Specifically, when milling the heat sink fins, the electric push rod 20 drives the abutment plate 19 to abut against the opening position at the rear end of the shell 4, and cooperates with the electric control clamping seat 9 to vertically clamp the shell 4, offsetting the squeezing force of the fine milling cutter 12 on the shell 4, and further improving the stability of the shell 4 during milling.

[0058] See also Figure 4 and Figure 5 The finishing milling cutter 12 includes a cutter head 1201 and a cutter shaft portion 1202 connected thereto by a spline socket. The cutter head 1201 movably passes through the annular cylinder 11 and extends to the interior of its central cavity. The end of the cutter shaft portion 1202 located on the inner side of the cutter head 1201 is a prismatic structure. The end of the cutter shaft portion 1202 is rotatably connected to a fixed cylinder 21. The fixed cylinder 21 is fixedly connected to the inner wall of the inner cavity of the annular cylinder 11, and the passive gear 13 is fixedly connected to the cutter shaft portion 1202.

[0059] Specifically, the double-sided gear ring 14 drives the cutter shaft portion 1202 to rotate through the passive gear 13 , and the cutter shaft portion 1202 drives the cutter head portion 1201 to rotate.

[0060] See also Figure 4 and Figure 5The cutter head 1201 is a horizontal round rod structure. The outer end of the cutter head 1201 is rotatably connected to a ring 22. The lower end of the ring 22 is fixedly connected to a sliding column 23. The sliding column 23 is slidably connected to a single-sided gear ring 24. The upper end surface of the single-sided gear ring 24 is provided with a plurality of guide grooves 2401 evenly distributed around the circumference. The single-sided gear ring 24 is rotatably connected to the inner wall of the annular cylinder 11. The lower end of the single-sided gear ring 24 is engaged with a second driving gear 25. The second driving gear 25 extends to the bottom of the annular cylinder 11 and is fixedly connected to the output shaft of the second motor 26. The second motor 26 is fixedly connected to the lower end surface of the annular cylinder 11.

[0061] For details, please refer to Figure 9 When the single-sided gear ring 24 rotates, the guide groove 2401 squeezes the sliding column 23, and the sliding column 23 drives the cutter head 1201 to move along the radial direction of the annular cylinder 11, changing the extension length of the cutter head 1201 to adapt to the processing requirements of shells 4 of different specifications. It should be noted that the double-sided gear ring 14 refers to a circular ring with latch teeth on both the upper and lower end faces. Similarly, the single-sided gear ring 24 refers to a circular ring with latch teeth on the lower end face.

[0062] See also Figure 5 A raised ring that cooperates with the collar 22 is fixedly connected to the outer wall of the cutter head 1201. The raised ring extends into the collar 22 and slides against the inner wall of the collar 22. The guide groove 2401 is an inclined groove and its cross-section is convex. The cross-section of the sliding column 23 is an inverted T-shaped.

[0063] Specifically, when the sliding column 23 with an inverted T-shaped cross section slides in the guide groove 2401 , it is vertically and horizontally limited by the guide groove 2401 , thereby improving the stability of the movement of the cutter head 1201 .

[0064] See also Figure 4 and Figure 5 The center positions of the cutter head portion 1201 and the cutter shaft portion 1202 are both provided with an axial cavity running through themselves. The fixed cylinder 21 is a hollow cylinder. The fixed cylinder 21 is fixedly connected to a liquid inlet pipe 27 extending to the outside of the annular cylinder 11. The outer end of the liquid inlet pipe 27 is fixedly connected to an annular pipe 28. The annular pipe 28 is fixedly connected to a liquid injection pipe 29. The liquid injection pipe 29 is connected to an external cutting fluid supply pump.

[0065] Specifically, when the fine milling cutter 12 performs milling operations, the external cutting fluid supply pump injects the cutting fluid into the fixed cylinder 21 through the injection pipe 29, the annular pipe 28 and the liquid inlet pipe 27, and then the cutting fluid flows from the fixed cylinder 21 into the central cavity of the cutter shaft portion 1202, and then the cutting fluid is discharged into the milling groove through the central cavity of the cutter head portion 1201, so as to fully cool the fine milling cutter 12, and cooperate with the vertical milling cutting method to fully flush and clean the debris in the milling groove, thereby further improving the chip removal effect.

[0066] Second implementation method:

[0067] Figure 3 、 Figure 11 and Figure 12 The present invention shows an intelligent finishing production line for automobile starter housing. On the basis of the first embodiment, a pretreatment mechanism 30 arranged opposite to the finishing milling mechanism 10 is fixedly connected to the fixed frame 6. The pretreatment mechanism 30 includes a lifting plate 34. A rough milling cutter 31 and a grinding roller 39 are provided below the lifting plate 34. The rough milling cutter 31 and the grinding roller 39 are both connected to a drive motor 32. The outer end of the drive motor 32 is fixedly connected to a moving frame 33. The moving frame 33 is movably connected to a one-way screw module 35 installed in the lifting plate 34. The upper end of the lifting plate 34 is fixedly connected to the output shaft of the rotating motor 36. The rotating motor 36 is fixedly connected to a lifting cylinder 37 rotatably connected to the lifting plate 34. The lifting cylinder 37 is fixedly connected to the movable end of the second hydraulic cylinder 38. The fixed end of the second hydraulic cylinder 38 is fixedly connected to the fixed frame 6.

[0068] For details, please refer to Figure 2 、 Figure 9 and Figure 10 , which includes the following steps when used:

[0069] Step 1: loading; the robotic arm 3 located on one side of the finishing device 2 transports the shell 4 conveyed on the conveyor belt 1 to the electric-controlled clamping seat 9, and then the electric-controlled clamping seat 9 clamps and fixes the shell 4, and the driving mechanism 8 drives the conveyor disc 7 to rotate, so that the shell 4 moves to the bottom of the pre-processing mechanism 30;

[0070] Step 2, preprocessing, includes the following sub-steps:

[0071] S1, start the second hydraulic cylinder 38 and the one-way screw module 35 above the roughing cutter 31, so that the roughing cutter 31 is attached to the outer wall of the housing 4, and close the second hydraulic cylinder 38 and the one-way screw module 35;

[0072] S2, starting the drive motor 32 and the rotating motor 36 connected to the roughing cutter 31, rotating and milling the outer wall of the housing 4 until it rotates a set number of times, then turning off the drive motor 32 and the rotating motor 36 connected to the roughing cutter 31, and starting the one-way screw module 35 above the roughing cutter 31 again, so that the roughing cutter 31 is separated from the housing 4;

[0073] S3, the one-way screw module 35 and the drive motor 32 above the grinding roller 39 are started, and the rotating motor 36 is started at the same time, and the outer wall of the housing 4 is rotated and ground until the number of grinding turns reaches the set number of turns, and the one-way screw module 35, the drive motor 32 and the rotating motor 36 above the grinding roller 39 are turned off;

[0074] S4, start the one-way screw module 35 above the grinding roller 39 to separate the grinding roller 39 from the housing 4, and confirm the second hydraulic cylinder 38 again to return the lifting plate 34 to the initial position;

[0075] Step 3: Transfer the workstation, start the driving mechanism 8, and the conveyor plate 7 drives the pre-processed shell 4 to move to the bottom of the fine milling mechanism 10;

[0076] Step 4: milling the heat sink fins, including the following sub-steps:

[0077] A1: Start the first hydraulic cylinder 18, and the lifting frame 17 drives the annular cylinder 11 to move to the bottom of the shell 4;

[0078] A2, start the first motor 16, so that the multiple fine milling cutters 12 rotate synchronously;

[0079] A3, start the first hydraulic cylinder 18 again, so that the multiple fine milling cutters 12 perform vertical synchronous milling on the outer wall of the shell 4 until the milling of the shell 4 is completed, turn off the first motor 16, and use the first hydraulic cylinder 18 to return the annular cylinder 11 to its initial position;

[0080] Step 5: unloading, start the electric control clamping seat 9 to release the shell 4, and use the robot arm 3 on the other side to transport the processed shell 4 to the conveyor belt 1 again.

[0081] Compared with the traditional starter housing processing line, the present invention uses a pre-treatment mechanism 30 including a rough milling cutter 31 and a grinding roller 39 to mill and grind the outer wall of the housing 4, clean and remove the protrusions and milling burrs on the outer wall of the rough housing, facilitate subsequent fine milling operations, further improve the molding quality of the heat dissipation fins, and reduce the influence of the protrusions and burrs on the outer wall of the housing 4 on the molding; at the same time, by providing a one-way screw module 35, the position of the rough milling cutter 31 and the grinding roller 39 is adjusted, and the radial depth of rough milling and grinding is adjusted.

[0082] See also Figure 11 and Figure 12 The lifting plate 34 is a disc-shaped structure. A pair of radial sliding grooves coinciding with its radial direction are opened at the lower end of the lifting plate 34. The moving frame 33 extends into the radial sliding groove and slides against its inner wall. The one-way screw module 35 includes a one-way screw threadedly connected to the moving frame 33 and a screw motor fixedly connected to the end of the one-way screw. The screw motor is fixedly connected to the lifting plate 34.

[0083] Specifically, the screw motor drives the one-way screw to rotate, and the one-way screw drives the movable frame 33 to move in the radial slot, thereby changing the positions of the roughing cutter 31 and the grinding roller 39 .

[0084] It should be noted that in this field, the roughing cutter 31 and the finishing cutter 12 are existing components. Generally, the number of blades and the rotation speed of the finishing cutter 12 are greater than the number of blades and the rotation speed of the roughing cutter 31. This is the existing technology. Those skilled in the art can select the roughing cutter 31 and the finishing cutter 12 of appropriate specifications as needed, and this application will not go into details.

[0085] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An intelligent finishing production line for automobile starter housing, characterized in that: The invention comprises a conveyor belt (1); a finishing device (2) is provided on one side of the conveyor belt (1); a pair of mechanical arms (3) are provided on both sides of the finishing device (2); the mechanical arms (3) are used to transport the shell (4) between the conveyor belt (1) and the finishing device (2); the finishing device (2) comprises a workbench (5); a fixed frame (6) is fixedly connected to the workbench (5); a conveyor disc (7) is rotatably connected to the fixed frame (6); the conveyor disc (7) is connected to a driving mechanism (8) for driving the conveyor disc to rotate; and a plurality of electrically controlled clamping seats (9) are fixedly connected to the conveyor disc (7) in a uniform circumference. The fixing frame (6) is also fixedly connected to a fine milling mechanism (10), which comprises an annular cylinder (11) sleeved on the outside of the housing (4), a plurality of fine milling cutters (12) extending to the central cavity of the annular cylinder (11) being rotatably connected therein, the outer ends of the fine milling cutters (12) being fixedly connected to a passive gear (13) located in the inner cavity of the annular cylinder (11), the passive gear (13) being meshed with a double-sided gear ring (14) rotatably connected to the annular cylinder (11), and the double-sided gear ring (14) being rotatably connected thereto. 4) A first driving gear (15) is meshed with a side away from the passive gear (13), the first driving gear (15) is fixedly connected to the output shaft of the first motor (16), and the first motor (16) is fixedly connected to the upper end surface of the annular cylinder (11); the upper end of the annular cylinder (11) is fixedly connected to a lifting frame (17), the upper end of the lifting frame (17) is fixedly connected to the movable end of the first hydraulic cylinder (18), and the fixed end of the first hydraulic cylinder (18) is fixedly connected to the fixed frame (6).

2. The intelligent finishing production line for automobile starter housing according to claim 1 is characterized in that: The precision milling cutter (12) comprises a cutter head (1201) and a cutter shaft (1202) connected thereto by a spline socket connection. The cutter head (1201) movably penetrates the annular cylinder (11) and extends into the interior of the central cavity thereof. The end of the cutter shaft (1202) located inside the cutter head (1201) is in a prismatic structure. The end of the cutter shaft (1202) is rotatably connected to a fixed cylinder (21). The fixed cylinder (21) is fixedly connected to the inner wall of the inner cavity of the annular cylinder (11). The passive gear (13) is fixedly connected to the cutter shaft (1202).

3. The intelligent finishing production line for automobile starter housing according to claim 2 is characterized in that: The cutter head (1201) is in a horizontal rod-shaped structure. The outer end of the cutter head (1201) is rotatably connected to a collar (22). The lower end of the collar (22) is fixedly connected to a sliding column (23). The sliding column (23) is slidably connected to a single-sided gear ring (24). The upper end surface of the single-sided gear ring (24) is provided with a plurality of guide grooves (2401) evenly distributed around the circumference. The single-sided gear ring (24) is rotatably connected to the inner wall of the annular cylinder (11). The lower end of the single-sided gear ring (24) is meshed with a second driving gear (25). The second driving gear (25) extends to the bottom of the annular cylinder (11) and is fixedly connected to the output shaft of the second motor (26). The second motor (26) is fixedly connected to the lower end surface of the annular cylinder (11).

4. The intelligent finishing production line for automobile starter housing according to claim 3 is characterized in that: The fixed frame (6) is fixedly connected to a pre-processing mechanism (30) arranged opposite to the fine milling mechanism (10), the pre-processing mechanism (30) comprises a lifting plate (34), a rough milling cutter (31) and a grinding roller (39) are arranged below the lifting plate (34), the rough milling cutter (31) and the grinding roller (39) are both connected to a driving motor (32), the outer end of the driving motor (32) is fixedly connected to a moving frame (33), the moving frame (33) is movably connected to a one-way screw module (35) installed in the lifting plate (34), the upper end of the lifting plate (34) is fixedly connected to the output shaft of the rotating motor (36), the rotating motor (36) is fixedly connected to a lifting cylinder (37) rotatably connected to the lifting plate (34), the lifting cylinder (37) is fixedly connected to the movable end of a second hydraulic cylinder (38), and the fixed end of the second hydraulic cylinder (38) is fixedly connected to the fixed frame (6).

5. The intelligent finishing production line for automobile starter housing according to claim 1 is characterized in that: The electrically controlled clamping seat (9) comprises a base (901) fixedly connected to the conveying disc (7), a pair of clamping blocks (902) being slidably connected to the base (901), the pair of clamping blocks (902) passing through the rotating shaft hole of the front end cover of the housing (4) and abutting against the inner wall of the rotating shaft hole, and the pair of clamping blocks (902) being movably connected to a bidirectional screw rod module (903) fixed on the upper part of the base (901).

6. The intelligent finishing production line for automobile starter housing according to claim 5 is characterized in that: The base (901) is a cylindrical structure and its diameter is smaller than the inner diameter of the housing (4). The clamping block (902) is an arc-shaped block and its outer wall is slidably fitted with the inner wall of the rotating shaft hole of the front end cover of the housing (4). The lower end of the lifting frame (17) is fixedly connected to the fixed end of the electric push rod (20), and the movable end of the electric push rod (20) is fixedly connected to the abutment disk (19), and the abutment disk (19) is a truncated cone structure.

7. The intelligent finishing production line for automobile starter housing according to claim 3 is characterized in that: A raised ring that cooperates with the collar (22) is fixedly connected to the outer wall of the cutter head (1201), and the raised ring extends into the collar (22) and slides against the inner wall of the collar (22). The guide groove (2401) is an inclined groove and its cross section is convex, and the cross section of the sliding column (23) is inverted T-shaped.

8. The intelligent finishing production line for automobile starter housing according to claim 3 is characterized in that: The center positions of the cutter head portion (1201) and the cutter shaft portion (1202) are both provided with an axial cavity penetrating therethrough. The fixed cylinder (21) is a hollow cylinder. The fixed cylinder (21) is fixedly connected to a liquid inlet pipe (27) extending to the outside of the annular cylinder (11). The outer end of the liquid inlet pipe (27) is fixedly connected to an annular pipe (28). The annular pipe (28) is fixedly connected to a liquid injection pipe (29). The liquid injection pipe (29) is connected to an external cutting fluid supply pump.

9. The intelligent finishing production line for automobile starter housing according to claim 4 is characterized in that: The following steps are included when using it: Step 1: loading; a mechanical arm (3) located on one side of the finishing device (2) transports the shell (4) conveyed on the conveyor belt (1) to the electric-controlled clamping seat (9), and then the electric-controlled clamping seat (9) clamps and fixes the shell (4), and the driving mechanism (8) drives the conveying disc (7) to rotate, so that the shell (4) moves to the bottom of the pre-processing mechanism (30); Step 2, preprocessing, includes the following sub-steps: S1, start the second hydraulic cylinder (38) and the one-way screw module (35) above the roughing cutter (31), so that the roughing cutter (31) is attached to the outer wall of the housing (4), and close the second hydraulic cylinder (38) and the one-way screw module (35); S2, starting the driving motor (32) and the rotating motor (36) connected to the roughing cutter (31), rotating and milling the outer wall of the housing (4), until the set number of rotations, turning off the driving motor (32) and the rotating motor (36) connected to the roughing cutter (31), and starting the one-way screw module (35) above the roughing cutter (31) again, so that the roughing cutter (31) is separated from the housing (4); S3, starting the one-way screw module (35) and the drive motor (32) above the grinding roller (39), and simultaneously starting the rotating motor (36), rotating and grinding the outer wall of the housing (4), until the number of grinding turns reaches the set number of turns, and then turning off the one-way screw module (35), the drive motor (32) and the rotating motor (36) above the grinding roller (39); S4, start the one-way screw module (35) above the grinding roller (39), so that the grinding roller (39) is separated from the housing (4), and the second hydraulic cylinder (38) is determined again, so that the lifting plate (34) returns to the initial position; Step 3: Transfer the workstation, start the driving mechanism (8), and the conveyor plate (7) drives the pre-processed shell (4) to move to the bottom of the fine milling mechanism (10); Step 4: milling the heat sink fins, including the following sub-steps: A1, start the first hydraulic cylinder (18), the lifting frame (17) drives the annular cylinder (11) to move to the bottom of the housing (4); A (2), start the first motor (16), so that the multiple fine milling cutters (12) rotate synchronously; A2, start the first hydraulic cylinder (18) again, so that the multiple fine milling cutters (12) perform vertical synchronous milling on the outer wall of the shell (4) until the milling of the shell (4) is completed, turn off the first motor (16), and return the annular cylinder (11) to the initial position through the first hydraulic cylinder (18); Step five, unloading, start the electric control clamping seat (9) to release the shell (4), and use the mechanical arm (3) on the other side to transport the processed shell (4) back to the conveyor belt (1).

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