A right-angled rectangular circulating conveying cast aluminum rotor marking and reaming production line

Abstract

The utility model discloses a right angle rectangular circulation conveying's cast aluminum rotor engraving reaming production line, including setting in the annular right angle rectangular chute of rectangular frame workbench upper end surface, the number of mobile setting in the annular right angle rectangular chute's following fixture, set in the step type positioning through -hole of following fixture upper end surface for the positioning cast aluminum rotor outer circle, set in following fixture lower part with annular right angle rectangular chute realizes the sliding fit connection of square positioning column, set in the four corner parts of square positioning column for realizing the translation of guiding fillet along 90 degrees right angle direction at the right angle elbow of annular right angle rectangular chute, there is a pull hook cylinder with hook head in every four sides of rectangular frame workbench periphery and is set up. The utility model discloses can realize the compact layout of production line, reduces the manpower cost and the configuration cost of production line equipment of production line.

Description

Technical Field

[0001] This utility model relates to the technical field of cast aluminum rotor production process equipment, specifically to a production line for engraving and reaming holes on cast aluminum rotors using a right-angled rectangular circulating conveyor. Background Technology

[0002] A cast aluminum rotor is a type of motor rotor formed by high-pressure casting of aluminum into a rotor core. The mass production of high-pressure cast aluminum rotors involves sequentially engraving the end faces of the rotor core and reaming the inner bore to improve the accuracy of the inner hole. Conventionally, the end face engraving and reaming operations for cast aluminum rotors are performed separately on engraving and reaming machines, respectively. The drawback of this method is that it relies on manual labor, resulting in low efficiency and making it unsuitable for mass production.

[0003] In conventional mass production, production lines for engraving and reaming cast aluminum rotors typically use roller conveyors or conveyor belts to sequentially transport the cast aluminum rotors to the engraving and reaming stations. Then, robotic arms positioned next to the engraving and reaming stations respectively position the rotors onto the fixtures on the engraving and reaming machine tables. This conventional production line has several drawbacks: it's not compact enough, occupies a large area, and doesn't fully utilize workshop space; another disadvantage is that workpieces cannot be precisely moved to the corresponding operating stations, requiring manual installation onto the fixtures on the engraving and reaming machine tables, or the use of dedicated automated robotic arms for automatic workpiece clamping and positioning. This increases labor and equipment costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a right-angled rectangular circulating conveyor production line for engraving and reaming holes in cast aluminum rotors. The aim is to achieve a compact production line layout, improve the automation of the engraving and reaming operation on cast aluminum rotors, increase production efficiency, and reduce labor and equipment configuration costs. The specific technical solution is as follows: A production line for engraving and boring holes in cast aluminum rotors using a right-angled rectangular circulating conveyor includes a rectangular frame worktable, an annular right-angled rectangular chute disposed on the upper surface of the rectangular frame worktable, a plurality of accompanying fixtures movably disposed within the annular right-angled rectangular chute, stepped positioning through holes disposed on the upper surface of the accompanying fixtures for positioning the outer circle of the cast aluminum rotor, square positioning posts disposed on the lower part of the accompanying fixtures and slidably connected to the annular right-angled rectangular chute, and guide rounded corners disposed at the four corners of the square positioning posts for translating along a 90-degree right-angle direction at the right-angled bends of the annular right-angled rectangular chute; the rectangular frame worktable... Each of the four sides of the worktable is equipped with a hook cylinder to push the accompanying clamp on the annular right-angled rectangular slide near the hook cylinder to move forward in a stepping manner. At the four right-angled bends of the annular right-angled rectangular slide, there are loading and unloading operation stations, engraving operation stations, reaming operation stations, and unloading operation stations in sequence. A liftable engraving pressure head is set above the right-angled bend of the engraving operation station, and a liftable rotary reamer is set above the right-angled bend of the reaming operation station. A loading and unloading synchronous robot is set between the unloading operation station and the loading and unloading operation stations.

[0005] Preferably, the hook head of the hook cylinder is an L-shaped hook head.

[0006] Preferably, the loading / unloading synchronous robot is positioned between and close to the unloading / unloading operation station; the hook cylinder includes an engraving conveying hook cylinder for advancing and conveying the accompanying clamp located at the right-angle turn of the loading / unloading operation station toward the engraving operation station, a reaming conveying hook cylinder for advancing and conveying the accompanying clamp located at the right-angle turn of the engraving operation station toward the reaming operation station, an unloading conveying hook cylinder for advancing and conveying the accompanying clamp located at the right-angle turn of the reaming operation station toward the unloading operation station, and an unloading conveying hook cylinder for advancing the accompanying clamp located at the right-angle turn of the unloading operation station toward the loading / unloading operation station to a position close to the loading / unloading synchronous robot for unloading.

[0007] Preferably, the horizontal cross-sectional outline of the upper part of the accompanying fixture is a square outline, and each of the accompanying fixtures is arranged and abutted in sequence on the annular right-angled rectangular slide; and a vacancy of the accompanying fixture is preset at the right-angle bend of at least one of the loading / unloading operation station, the engraving operation station, the reaming operation station and the unloading operation station of the annular right-angled rectangular slide.

[0008] Preferably, the annular right-angled rectangular slide groove has lateral positioning grooves on both sides of the groove, and the square positioning post of the accompanying clamp has a positioning flange, which is slidably disposed on the lateral positioning groove.

[0009] Preferably, the front or rear end face of the square outline of the accompanying clamp is inlaid with a magnet, and adjacent accompanying clamps are tightly attached together by the magnetic attraction of the magnet.

[0010] To achieve a compact layout, the present invention provides a right-angled rectangular circulating conveyor cast aluminum rotor engraving and reaming production line, wherein an engraving machine and a reaming machine are respectively installed on one side of the inner frame of the rectangular frame workbench. The engraving pressure head is connected to the lifting mechanism of the engraving machine, and the rotating reamer is connected to the main shaft of the reaming machine.

[0011] To improve the positioning accuracy of reaming operations, this utility model discloses a right-angled rectangular circulating conveyor cast aluminum rotor engraving reaming production line. A 90-degree V-shaped iron block is provided on the outer side of the right-angled bend at the reaming operation station, serving to position the two right-angled sides of the traveling fixture's outline. A pair of positioning surfaces of the 90-degree V-shaped iron block are respectively parallel to the adjacent two sides of the right-angled bend of the annular right-angled rectangular slide groove. A top-pressure cylinder is provided on the inner side of the right-angled bend at the reaming operation station to press and fix the traveling fixture and the cast aluminum rotor on it onto the 90-degree V-shaped iron block. The top-pressure head of the top-pressure cylinder directly presses against the outer circle of the cast aluminum rotor, thereby simultaneously and accurately positioning and pressing the traveling fixture and the cast aluminum rotor on it onto the 90-degree V-shaped iron block.

[0012] Preferably, the top pressure head of the top pressure cylinder directly presses against the outer circle of the cast aluminum rotor in a 45° direction (the 45° pressing direction coincides with the symmetrical center line of the 90° V-shaped iron).

[0013] Preferably, a top pressure hole is provided along the 45° direction of the outer contour of the accompanying clamp, which communicates with the stepped positioning through hole. The top pressure head of the top pressure cylinder enters the top pressure hole and presses against a section of the outer circle of the cast aluminum rotor located in the stepped positioning through hole.

[0014] Preferably, in order to prevent the top pressure head of the top pressure cylinder from interfering with the outer contour of the adjacent traveling clamp, an avoidance notch is provided at the corner of the outer contour of the traveling clamp.

[0015] As a further improvement of this utility model, a reaming synchronous chip remover is also provided on the reaming operation station of the rectangular frame worktable. The reaming synchronous chip remover includes a vacuum suction pipe located on the rectangular frame worktable below the right-angle bend of the reaming operation station. The inlet of the vacuum suction pipe faces upward and is directly opposite the stepped positioning through hole on the accompanying fixture. The lifting and lowering of the inlet of the vacuum suction pipe is achieved by a lifting cylinder. The reaming machine is provided with a lifting spindle box, and a spindle is provided on the lifting spindle box. At the lower end of the lifting spindle box of the reaming machine and at the periphery of the spindle of the reaming machine, a flow-limiting sealing cover with its opening facing downward and elastically retractable in the vertical direction is provided. The flow-limiting sealing cover has a number of flow-limiting holes.

[0016] Preferably, the inlet of the vacuum suction pipe is provided with a sealing ring for sealing the lower end face of the stepped positioning through hole of the accompanying clamp.

[0017] In this invention, the vacuum suction pipe is connected to a vacuum generating device (such as a vacuum pump) and an electric on / off valve is provided on the vacuum suction pipe.

[0018] Preferably, the lower part of the rectangular frame workbench is provided with a support base, the vacuum suction pipe includes a vertically arranged rigid pipe and a flexible pipe connected to the lower end of the rigid pipe, the rigid pipe is movably arranged on the support base of the rectangular frame workbench in the vertical direction, and the lifting head of the lifting cylinder is connected to one side of the rigid pipe.

[0019] As a further improvement of this utility model, the flow-limiting sealing cover includes an elastic telescopic bellows fixed to the lower end face of the lifting spindle box of the reaming machine, and a rigid sleeve connected to the lower end of the elastic telescopic bellows. A number of cantilevered swirl jet pipes are arranged at intervals on the inner wall of the rigid sleeve. The inner hole of the cantilevered swirl jet pipe is connected to the outside of the rigid sleeve. A number of spirally twisted airflow guiding grooves are arranged at intervals on the inner wall of the cantilevered swirl jet pipe. The cantilevered swirl jet pipe points towards the reamer and the pipe opening of the cantilevered swirl jet pipe is close to the outer circle of the rotating reamer, thereby forming a swirling airflow limiting hole in the inner hole of the cantilevered swirl jet pipe with its pipe opening aligned with the outer circle of the reamer.

[0020] Preferably, the upper end of the elastic telescopic bellows is provided with an upper flange, which is fixed to the lower end face of the lifting spindle box by screws.

[0021] Preferably, a sealing ring is provided on the lower end face of the rigid sleeve.

[0022] The distance between the nozzle of the cantilevered swirl jet pipe and the outer circle of the reamer is 2-5mm; the total circumferential twist angle of the spiral airflow guide groove is 90°~120°.

[0023] Preferably, a fitting gap is provided between the inner hole of the rigid sleeve and the outer circle of the cast aluminum rotor, and a guide slope is provided at the lower end of the rigid sleeve to ensure that the rigid sleeve is accurately fitted onto the outer periphery of the cast aluminum rotor and to reduce the eccentricity error of the rigid sleeve relative to the cast aluminum rotor.

[0024] Preferably, the fitting gap between the inner hole of the rigid sleeve and the outer circle of the cast aluminum rotor is smaller than the distance between the nozzle of the cantilevered swirl jet pipe and the outer circle of the reamer.

[0025] The airflow guiding groove on the inner wall of the cantilevered swirl jet pipe is formed by pre-selecting a straight groove on the inner wall of the cantilevered swirl jet pipe, and then twisting the cantilevered swirl jet pipe in the circumferential direction at a certain angle through thermoplastic deformation.

[0026] Preferably, to improve the stability and accuracy of the engraving operation, a 90-degree V-shaped iron is provided on the outer side of the right-angle bend at the engraving operation station to position the two right-angled sides of the outer contour of the accompanying fixture. A pair of positioning surfaces of the 90-degree V-shaped iron are respectively parallel to the adjacent two sides of the slide groove at the right-angle bend of the annular right-angled rectangular slide groove. A top-pressure cylinder is provided on the inner side of the right-angle bend at the engraving operation station to press and fix the accompanying fixture and the cast aluminum rotor on the accompanying fixture onto the 90-degree V-shaped iron. The top-pressure head of the top-pressure cylinder directly presses against the outer circle of the cast aluminum rotor, thereby enabling the accompanying fixture and the cast aluminum rotor on the accompanying fixture to be simultaneously and accurately positioned and pressed and fixed onto the 90-degree V-shaped iron.

[0027] In this utility model, the synchronous loading and unloading robot includes a loading and unloading base disposed on one side of the inner frame of the rectangular frame worktable, a loading and unloading cantilever frame disposed on the loading and unloading base and extending horizontally outward along the upper direction of the rectangular frame worktable to the outer side of the rectangular frame worktable, a common lifting seat slidably disposed below the loading and unloading cantilever frame in the horizontal direction, and a loading mechanical gripper and an unloading mechanical gripper respectively disposed on the common lifting seat.

[0028] Preferably, the loading / unloading cantilever is provided with a guide rail, and the common lifting seat is slidably mounted on the guide rail of the loading / unloading cantilever in the horizontal direction.

[0029] The working principle of the synchronous loading and unloading robot is as follows: The loading and unloading synchronous robot continuously picks up the cast aluminum rotors with engraved holes from the conveyor belt of the previous process on the production line and places them on the accompanying fixture located at the right-angle bend of the loading and unloading operation station. At the same time, the loading and unloading synchronous robot also continuously picks up the cast aluminum rotors with engraved holes from the unloading operation station and releases them onto the conveyor belt for the next process.

[0030] The loading mechanical gripper's action of placing the already gripped cast aluminum rotor with the engraved hole to be engraved into the accompanying fixture is synchronized with the unloading mechanical gripper's action of gripping the cast aluminum rotor with the engraved hole already completed; the loading mechanical gripper's action of gripping the cast aluminum rotor with the engraved hole to be engraved is synchronized with the unloading mechanical gripper's action of releasing the cast aluminum rotor with the engraved hole already completed.

[0031] A production line for engraving and reaming holes using a right-angled rectangular circulating conveyor cast aluminum rotor, comprising the following steps for engraving and reaming holes using the aforementioned cast aluminum rotor engraving and reaming equipment: (1) Loading: The loading and unloading synchronous robot grabs the cast aluminum rotor with the loading mechanical gripper and places it on the accompanying fixture located at the right-angle turn of the loading and unloading operation station. The engraving and conveying hook cylinder moves in a rhythm, so that the accompanying fixture moves forward one stroke in the direction of the engraving operation station until the first accompanying fixture moving in the direction of the right-angle turn of the engraving operation station enters the right-angle turn of the engraving operation station. Note that after each rhythmic movement of the engraving and conveying hook cylinder, there will be a reset action, so as to prepare for the next workpiece push and conveying in advance. (2) Engraving: Start the engraving machine to engrave the cast aluminum rotor on the traveling fixture located at the right-angle bend of the engraving operation station; (3) Reaming: After the aluminum rotor is engraved, the reaming conveying hook cylinder moves in a rhythmic motion, causing the accompanying fixture to advance one stroke towards the reaming operation station until the foremost accompanying fixture moving towards the reaming operation station enters the right-angle bend of the reaming operation station; the reaming machine is activated to ream the aluminum rotor on the accompanying fixture located at the right-angle bend of the reaming operation station; note that after each rhythmic motion of the reaming conveying hook cylinder, there will be a reset motion, thus preparing in advance for the next workpiece conveying; (4) Discharge: After the aluminum rotor is reamed, the discharge conveying hook cylinder operates in a rhythmic motion, causing the accompanying clamp to advance one stroke towards the discharge operation station until the foremost accompanying clamp in the direction of the discharge operation station enters the right-angle bend of the discharge operation station; note that after each rhythmic motion of the discharge conveying hook cylinder, there will be a reset action, thus preparing for the next workpiece advance and conveying. (5) Unloading: After the cast aluminum rotor is conveyed to the unloading operation station, the unloading conveying hook cylinder moves in a rhythmic motion, causing the accompanying clamp to move forward one stroke in the direction of the loading and unloading operation station until the foremost accompanying clamp in the direction of the loading and unloading operation station reaches the adjacent position at the right-angle bend of the loading and unloading operation station; after reaching the position, the loading and unloading synchronous robot moves, and the unloading mechanical gripper of the loading and unloading synchronous robot grabs the cast aluminum rotor with the engraved reaming hole completed and releases it onto the conveyor belt for the next process; note that after each rhythmic motion of the unloading conveying hook cylinder, there will be a reset action, thus preparing in advance for the next workpiece conveying; The loading mechanical gripper's action of placing the already gripped cast aluminum rotor with the engraved hole to be engraved into the accompanying fixture is synchronized with the unloading mechanical gripper's action of gripping the cast aluminum rotor with the engraved hole already completed; the loading mechanical gripper's action of gripping the cast aluminum rotor with the engraved hole to be engraved is synchronized with the unloading mechanical gripper's action of releasing the cast aluminum rotor with the engraved hole already completed.

[0032] Preferably, the four hook cylinders and the loading / unloading synchronous robot are all controlled by a PLC controller to achieve sequential, rhythmic movements.

[0033] In step (3), during reaming, the metal filings adhering to the cast aluminum rotor and the reamer are removed simultaneously using the following method: When the reaming machine is turned on, the vacuum suction pipe located below the right-angle bend of the reaming operation station is simultaneously connected. The inlet of the vacuum suction pipe is attached to the lower end face of the stepped positioning through hole of the accompanying fixture through a lifting cylinder. The lifting spindle box of the reaming machine moves down, so that the lower end of the flow-limiting sealing cover located around the spindle of the reaming machine is attached to the upper end face of the accompanying fixture and covers the cast aluminum rotor. After it is in place, the rotating reamer of the reaming machine continues to move down into the inner hole of the cast aluminum rotor for reaming. During reaming, a negative pressure is generated between the vacuum suction pipe and the inner hole of the cast aluminum rotor, and the metal filings formed during reaming are sucked away by the vacuum suction pipe. After reaming is completed, the rotating reamer... As the rotary reamer exits the inner bore of the cast aluminum rotor, the negative pressure between the vacuum suction pipe and the inner bore of the cast aluminum rotor instantly expands into the upper flow-limiting sealing cover. Air outside the flow-limiting sealing cover enters the cantilevered vortex jet pipe and, through the twisted airflow guide grooves on the inner wall of the cantilevered vortex jet pipe, is blown out from the inner bore (vortex-oriented airflow limiting hole) of the cantilevered vortex jet pipe to perform vortex cleaning on the outer surface of the rotary reamer, blowing off the metal shavings adhering to the rotary reamer and sucking them away through the vacuum suction pipe. After the vortex cleaning of the reamer is completed, the vacuum suction pipe is closed, and at the same time, the lifting spindle box of the reaming machine continues to move upward, causing the lower end of the elastic telescopic bellows of the flow-limiting sealing cover to disengage from the upper end face of the accompanying fixture, preparing for the reaming of the next cast aluminum rotor.

[0034] The beneficial effects of this utility model are: First, the cast aluminum rotor engraving and reaming production line of the present invention, which is a right-angled rectangular circulating conveyor, adopts a specially designed right-angled rectangular closed-loop conveyor line, and sets the operating station at the right angle of the right-angled rectangular closed-loop conveyor line. The engraving machine and the reaming machine are both located inside the right-angled rectangular closed-loop conveyor line, thereby achieving a compact layout of the production line and reducing the floor space of the production line (by about 40%).

[0035] Secondly, the present invention relates to a production line for engraving and boring holes on a cast aluminum rotor with a right-angled rectangular circular conveyor. The workpiece is conveyed by a traveling fixture and a dynamic transfer mechanism with vacancy is adopted. The step-by-step conveying on the right-angled rectangular circular closed-loop conveyor line is achieved by using hook cylinders arranged on the four sides of the rectangular frame worktable. This eliminates the need for conventional roller conveyor equipment or belt conveyor equipment, thereby reducing the production line cost.

[0036] Third, this utility model discloses a production line for engraving and boring holes in cast aluminum rotors using a right-angled rectangular circular conveyor. The right-angled rectangular closed-loop conveyor line features a 90-degree V-shaped iron at the right angle, ensuring high clamping and positioning accuracy for the accompanying fixture. The lower part of the accompanying fixture has a square positioning post with rounded guide corners, enabling smooth right-angle translation of the fixture. A matching pull hook cylinder then transports the fixture to the next operating station. This accompanying fixture with its special positioning and guiding structure works in conjunction with the annular right-angled rectangular slide of the rectangular frame worktable, the 90-degree V-shaped iron, and the top-pressure cylinder, thus replacing the conventionally expensive automated robotic arms and significantly reducing the cost of robotic arm configuration on the production line.

[0037] Fourth, the right-angled rectangular circulating conveyor cast aluminum rotor engraving and reaming production line of this utility model is equipped with a reaming synchronous chip removal device at the reaming operation station. It uses a cantilevered vortex jet pipe to generate a spiral cleaning airflow, and in conjunction with a closed vacuum suction structure at the reaming operation station, it can automatically and efficiently remove the metal chips generated during reaming (cleaning and reaming are synchronized). This improves the service life of the reamer and also improves the accuracy and surface quality of the reaming.

[0038] Fifth, the present invention relates to a production line for engraving and boring holes in a right-angled rectangular circulating conveyor cast aluminum rotor. The synchronous loading and unloading robot integrates the loading and unloading mechanical grippers into a set of two-dimensional shifting devices, which can realize loading and unloading simultaneously. It has high operating efficiency and low implementation cost. Attached Figure Description

[0039] Figure 1 This is a schematic plan view (top view) of a production line for engraving and boring holes on a right-angled rectangular circulating conveyor cast aluminum rotor according to this utility model. Figure 2 yes Figure 1 A schematic diagram of the rectangular frame worktable in the diagram; Figure 3 yes Figure 1 A schematic diagram of the engraving head of the engraving machine being positioned above the rectangular frame worktable; Figure 4 yes Figure 1 A schematic diagram of the accompanying fixture in the middle; Figure 5 yes Figure 1 A schematic diagram of the structure of a reamer with a rotating reamer positioned above a rectangular frame worktable and a reaming synchronous chip removal device installed at the reaming operation station of the rectangular frame worktable. Figure 6 This is a cross-sectional view of a cantilevered swirl jet pipe.

[0040] In the diagram: 1. Rectangular frame worktable; 2. Annular right-angled rectangular slide; 3. Traveling clamp; 4. Cast aluminum rotor; 5. Stepped positioning through hole; 6. Square positioning post; 7. Guide rounded corner; 8. Hook head; 9. Conveyor belt for the previous process; 10. Loading / unloading operation station; 11. Engraving operation station; 12. Reaming operation station; 13. Discharge operation station; 14. Engraving pressure head; 15. Reamer; 16. Synchronous loading / unloading robot; 17. Engraving conveyor hook cylinder; 18. Reaming conveyor hook cylinder; 19. Discharge conveyor hook cylinder; 20. Unloading conveyor hook cylinder; 21. Square outline; 22. Empty space; 23. Lateral positioning groove; 24. Positioning flange; 25. Magnet piece; 26. Engraving machine; 27. Reaming machine; 28. Spindle; 29. ​​90-degree V-shaped... 30. Top-pressure cylinder, 31. Top-pressure hole, 32. Vacuum dust collection pipe, 32-1. Rigid pipe, 32-2. Flexible pipe, 33. Lifting cylinder, 34. Lifting spindle box, 35. Flow-limiting sealing cover, 36. Flow-limiting hole, 37. Sealing ring, 38. Rigid sleeve, 39. Elastic telescopic bellows, 40. Screw, 41. Cantilevered swirl jet pipe, 42. Upper flange, 43. Guide slope, 44. Loading and unloading base, 45. Loading and unloading cantilever frame, 46. Shared lifting seat, 47. Loading mechanical gripper, 48. Unloading mechanical gripper, 49. Conveyor belt for the next process, 50. Avoidance gap, 51. Airflow guide groove.

[0041] Figure 1 In the middle: A1 to A7 are the directions of movement of the cast aluminum rotor indicated by the arrows at the corresponding positions (the cast aluminum rotor moves forward in sequence according to the directions indicated by the arrows A1, A2, A3, A4, A5, A6, A7, and A8). Detailed Implementation

[0042] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0043] Example 1: like Figures 1 to 6The diagram shows an embodiment of a right-angled rectangular circulating conveyor production line for engraving and boring holes in cast aluminum rotors according to this utility model. It includes a rectangular frame worktable 1, an annular right-angled rectangular slide 2 disposed on the upper surface of the rectangular frame worktable 1, a plurality of accompanying fixtures 3 movably disposed within the annular right-angled rectangular slide 2, stepped positioning through holes 5 disposed on the upper surface of the accompanying fixtures 3 for positioning the outer circle of the cast aluminum rotor 4, square positioning posts 6 disposed at the lower part of the accompanying fixtures 3 and slidably connected to the annular right-angled rectangular slide 2, and guide rounded corners 7 disposed at the four corners of the square positioning posts 6 for translating along a 90-degree right-angle direction at the right-angled bends of the annular right-angled rectangular slide 2; the rectangular frame worktable... 1. Each of the four outer sides is provided with a hook cylinder 17-20 with a hook head 8 to push the accompanying clamp on the annular right-angled rectangular slide 2 near the hook cylinder to move forward in a stepping manner; at the four right-angled corners of the annular right-angled rectangular slide 2, there are sequentially arranged loading and unloading operation stations 10, engraving operation stations 11, reaming operation stations 12 and unloading operation stations 13. Above the right-angled corner of the engraving operation station 11, there is a liftable engraving pressure head 14. Above the right-angled corner of the reaming operation station 12, there is a liftable rotating reamer 15. And at the position between the unloading operation station 13 and the loading and unloading operation station 10, there is a loading and unloading synchronous robot arm 16.

[0044] Preferably, the hook head of the hook cylinder 17-20 is an L-shaped hook head.

[0045] Preferably, the loading / unloading synchronous robot 16 is positioned between the unloading operation station 13 and the loading / unloading operation station 10, and close to the loading / unloading operation station 10; the hook cylinders 17-20 include a hook cylinder 17 for conveying the engraving operation station 11, which is used to push and convey the accompanying clamp 3 located at the right-angle turn of the loading / unloading operation station 10 toward the engraving operation station 11; and a hook cylinder 17 for conveying the accompanying clamp 3 located at the right-angle turn of the engraving operation station 11 toward the engraving operation station 11. The equipment includes a reaming operation station 12 for advancing and conveying materials via a reaming hook cylinder 18, a discharge operation station 12 for advancing and conveying materials via a follower clamp 3 located at the right-angle bend of the reaming operation station 12 towards the discharge operation station 13, and a discharge operation station 13 for advancing the follower clamp 3 located at the right-angle bend of the discharge operation station 13 towards the loading / unloading operation station 10 to a position close to the loading / unloading synchronous robot 16 for unloading.

[0046] Preferably, the horizontal cross-sectional outline of the upper part of the accompanying fixture 3 is a square outline, and each of the accompanying fixtures 3 is arranged and abutted in sequence on the annular right-angled rectangular slide 2; and a vacancy of the accompanying fixture 3 is preset at the right-angle bend of at least one of the loading / unloading operation station 10, the engraving operation station 11, the reaming operation station 12 and the unloading operation station 13 of the annular right-angled rectangular slide 2.

[0047] Preferably, the annular right-angled rectangular slide groove 2 has lateral positioning grooves 23 on both sides of the groove body, and the square positioning post 6 of the accompanying clamp 3 has a positioning flange 24, which is slidably disposed on the lateral positioning groove 23.

[0048] Preferably, a magnet 25 is embedded on the front or rear end face of the square outline of the accompanying clamp 3, and adjacent accompanying clamps 3 are tightly attached together by the magnetic attraction force of the magnet 25.

[0049] To achieve a compact layout, the cast aluminum rotor engraving and reaming production line of the present invention, which is a right-angled rectangular circulating conveyor, is provided with an engraving machine 26 and a reaming machine 27 on one side of the inner frame of the rectangular frame workbench 1. The engraving pressure head 14 is connected to the lifting mechanism of the engraving machine 26, and the rotating reamer 15 is connected to the main shaft of the reaming machine 27.

[0050] To improve the positioning accuracy of the reaming operation, this utility model discloses a right-angled rectangular circulating conveyor cast aluminum rotor engraving reaming production line. A 90-degree V-shaped iron block 29 is provided on the outer side of the right-angled bend at the reaming operation station 12, for positioning the two right-angled sides of the outer contour of the accompanying fixture 3. A pair of positioning surfaces of the 90-degree V-shaped iron block 29 are respectively parallel to the adjacent two sides of the slide groove at the right-angled bend of the annular right-angled rectangular slide groove 2. A top-pressing cylinder 30 is provided on the inner side of the right-angled bend at the reaming operation station 18, for pressing and fixing the accompanying fixture 3 and the cast aluminum rotor 4 on the accompanying fixture 3 onto the 90-degree V-shaped iron block 29. The top-pressing head of the top-pressing cylinder 30 directly presses against the outer circle of the cast aluminum rotor 4, thereby simultaneously and accurately positioning and pressing the accompanying fixture 3 and the cast aluminum rotor 4 on the accompanying fixture 3 onto the 90-degree V-shaped iron block 29.

[0051] Preferably, the top pressure head of the top pressure cylinder 30 directly presses against the outer circle of the cast aluminum rotor 4 in a 45° direction (the 45° pressing direction coincides with the symmetrical center line of the 90-degree V-shaped iron 29).

[0052] Preferably, a top pressure hole 31 is provided along the outer contour of the traveling clamp 3 at a 45° direction, which communicates with the stepped positioning through hole 5. The top pressure head of the top pressure cylinder 30 enters the top pressure hole 31 and presses against a section of the outer circle of the cast aluminum rotor 4 located in the stepped positioning through hole 5.

[0053] Preferably, in order to prevent the top pressure head of the top pressure cylinder 30 from interfering with the outer contour of the adjacent follower clamp 3, an avoidance notch 50 is provided at the corner of the outer contour of the follower clamp 3.

[0054] As a further improvement of this utility model, a reaming synchronous chip remover is also provided on the reaming operation station 12 of the rectangular frame workbench 1. The reaming synchronous chip remover includes a vacuum suction pipe 32 located on the rectangular frame workbench 1 below the right-angle bend of the reaming operation station 12. The opening of the vacuum suction pipe 32 faces upward and is directly opposite the stepped positioning through hole 5 on the accompanying fixture 3. The lifting cylinder 33 is used to lift and lower the opening of the vacuum suction pipe 32. A lifting spindle box 34 is provided on the reaming machine 27. A spindle 28 is provided on the lifting spindle box 34. A flow-limiting sealing cover 35 with its opening facing downward and elastically retractable in the vertical direction is provided at the lower end of the lifting spindle box 34 of the reaming machine 27 and at the periphery of the spindle 28 of the reaming machine 27. A number of flow-limiting holes 36 are provided on the flow-limiting sealing cover 35.

[0055] Preferably, the inlet of the vacuum suction pipe 32 is provided with a sealing ring 37 for sealing the lower end face of the stepped positioning through hole 5 of the accompanying clamp 3.

[0056] In this invention, the vacuum suction pipe 32 is connected to a vacuum generating device (such as a vacuum pump) and an electric opening and closing valve is provided on the vacuum suction pipe 32.

[0057] Preferably, the lower part of the rectangular frame workbench 1 is provided with a support base, and the vacuum suction pipe 32 includes a vertically arranged rigid pipe 32-1 and a flexible pipe 32-2 connected to the lower end of the rigid pipe 32-1. The rigid pipe 32-1 is movably arranged on the support base of the rectangular frame workbench 1 in the vertical direction, and the lifting head of the lifting cylinder 33 is connected to one side of the rigid pipe 32-1.

[0058] As a further improvement of this utility model, the flow-limiting sealing cover 35 includes an elastic telescopic bellows 39 fixed on the lower end face of the lifting spindle box 34 of the reaming machine 27, and a rigid sleeve 38 connected to the lower end of the elastic telescopic bellows 39. A number of cantilevered swirl jet pipes 41 are arranged at intervals on the inner wall of the rigid sleeve 38. The inner hole of the cantilevered swirl jet pipe 41 is connected to the outside of the rigid sleeve 38. A number of spirally twisted airflow guiding grooves 51 are arranged at intervals on the inner wall of the cantilevered swirl jet pipe 41. The cantilevered swirl jet pipe 41 points towards the reamer 15 and the pipe opening of the cantilevered swirl jet pipe 41 is close to the outer circle of the rotating reamer 15, thereby forming a swirling airflow limiting hole 36 in the inner hole of the cantilevered swirl jet pipe 41 with its pipe opening aligned with the outer circle of the reamer 15.

[0059] Preferably, the upper end of the elastic telescopic bellows 39 is provided with an upper flange 42, and the upper flange 42 is fixed to the lower end face of the lifting spindle box 34 by screws 40.

[0060] Preferably, a sealing ring 37 is provided on the lower end face of the rigid sleeve 38.

[0061] The distance between the nozzle of the cantilevered swirl jet pipe 41 and the outer circle of the reamer 15 is 2-5mm; the total circumferential twist angle of the spiral airflow guide groove 51 is 90°~120°.

[0062] Preferably, a fitting gap is provided between the inner hole of the rigid sleeve 38 and the outer circle of the cast aluminum rotor 4, and a guide slope 43 is provided at the lower end of the rigid sleeve 38 to ensure that the rigid sleeve 38 is accurately fitted onto the outer periphery of the cast aluminum rotor 4 and to reduce the eccentricity error of the rigid sleeve 38 relative to the cast aluminum rotor 4.

[0063] Preferably, the fitting gap between the inner hole of the rigid sleeve 38 and the outer circle of the cast aluminum rotor 4 is smaller than the distance between the nozzle of the cantilevered swirl jet pipe 41 and the outer circle of the reamer 15.

[0064] The airflow guiding groove 51 on the inner wall of the cantilevered swirl jet pipe 41 is formed by pre-cutting a straight groove on the inner wall of the cantilevered swirl jet pipe 41, and then twisting the cantilevered swirl jet pipe 41 in the circumferential direction by thermoplastic deformation to form a spiral airflow guiding groove 51.

[0065] Preferably, to improve the stability and accuracy of the engraving operation, a 90-degree V-shaped iron 29 is provided on the outer side of the right-angled corner of the engraving operation station 17 for positioning the two right-angled sides of the outer contour of the accompanying fixture 3. The pair of positioning surfaces of the 90-degree V-shaped iron 29 are respectively parallel to the adjacent two sides of the slide groove at the right-angled corner of the annular right-angled rectangular slide groove 2. A top-pressing cylinder 30 is provided on the inner side of the right-angled corner of the engraving operation station 11 for pressing and fixing the accompanying fixture 3 and the cast aluminum rotor 4 on the accompanying fixture 3 onto the 90-degree V-shaped iron 29. The top-pressing head of the top-pressing cylinder 30 directly presses against the outer circle of the cast aluminum rotor 4, thereby enabling the accompanying fixture 3 and the cast aluminum rotor 4 on the accompanying fixture 3 to be simultaneously and accurately positioned and pressed and fixed onto the 90-degree V-shaped iron 29.

[0066] In this utility model, the synchronous loading and unloading robot 16 includes a loading and unloading base 44 disposed on one side of the inner frame of the rectangular frame worktable 1, a loading and unloading cantilever 45 disposed on the loading and unloading base 44 and extending horizontally outward along the upper direction of the rectangular frame worktable 1 to the outer side of the rectangular frame worktable 1, a common lifting seat 46 slidably disposed below the loading and unloading cantilever 45 in the horizontal direction, and a loading mechanical gripper 47 and an unloading mechanical gripper 48 respectively disposed on the common lifting seat 46.

[0067] Preferably, the loading / unloading cantilever 45 is provided with a guide rail (not shown in the figure), and the common lifting seat 46 is slidably disposed on the guide rail of the loading / unloading cantilever 45 in the horizontal direction.

[0068] The working principle of the synchronous loading and unloading robot 16 is as follows: The loading and unloading synchronous robot 16 continuously grabs the cast aluminum rotor 4 with engraved holes from the conveyor belt 9 of the previous process on the production line through the loading mechanical gripper 47 and places it on the accompanying fixture 3 located at the right-angle bend of the loading and unloading operation station 10; at the same time, the loading and unloading synchronous robot 16 also continuously grabs the cast aluminum rotor 4 with engraved holes from the unloading operation station 13 through the unloading mechanical gripper 48 and releases it onto the conveyor belt 49 for the next process.

[0069] The action of the loading mechanical gripper 37 placing the cast aluminum rotor 4 with the hole to be engraved into the accompanying fixture 3 is synchronized with the action of the unloading mechanical gripper 48 grabbing the cast aluminum rotor 4 with the hole already engraved; the action of the loading mechanical gripper 47 grabbing the cast aluminum rotor 4 with the hole to be engraved into is synchronized with the action of the unloading mechanical gripper 48 releasing the cast aluminum rotor 4 with the hole already engraved.

[0070] Example 2: A production line for engraving and reaming holes using a right-angled rectangular circulating conveyor cast aluminum rotor, comprising the following steps for engraving and reaming holes using the aforementioned cast aluminum rotor engraving and reaming equipment: (1) Loading: The loading and unloading synchronous robot 16 picks up the cast aluminum rotor 4 through the loading mechanical gripper 47 and places it on the accompanying clamp 3 located at the right-angle turn of the loading and unloading operation station 10. The engraving and conveying hook cylinder 17 moves in a rhythmic manner, so that the accompanying clamp 3 moves forward one stroke towards the engraving operation station 11 in a rhythmic manner until the first accompanying clamp 3 moving towards the right-angle turn of the engraving operation station 11 enters the right-angle turn of the engraving operation station 11. Note that after each rhythmic movement, the engraving and conveying hook cylinder 17 will have a reset action, so as to prepare for the next workpiece push and conveying in advance. (2) Engraving: Start the engraving machine 26 to engrave the cast aluminum rotor 4 on the traveling fixture 3 located at the right-angle bend of the engraving operation station 11. (3) Reaming: After the aluminum rotor 4 is engraved, the reaming conveying hook cylinder 18 moves in a rhythmic motion, causing the accompanying fixture 3 to move forward one stroke towards the reaming operation station 12 until the foremost accompanying fixture 3 moving towards the reaming operation station 12 enters the right-angle bend of the reaming operation station 12; the reaming machine 27 is activated to ream the aluminum rotor 4 on the accompanying fixture 3 located at the right-angle bend of the reaming operation station 12; note that after each rhythmic motion, the reaming conveying hook cylinder 18 will have a reset motion, thus preparing in advance for the next workpiece conveying; (4) Discharge: After the aluminum rotor 4 is reamed, the discharge conveying hook cylinder 19 operates in a rhythmic manner, causing the accompanying clamp 3 to advance one stroke towards the discharge operation station 13 until the foremost accompanying clamp 3 in the direction of the discharge operation station 13 enters the right-angle bend of the discharge operation station 13; note that after each rhythmic operation, the discharge conveying hook cylinder 19 will have a reset action, thus preparing in advance for the next workpiece advance and conveying. (5) Unloading: After the cast aluminum rotor 4 is conveyed to the unloading operation station 13, the unloading conveying hook cylinder 20 moves in a rhythmic manner, causing the accompanying clamp 3 to move forward one stroke in the direction of the loading and unloading operation station 10 until the foremost accompanying clamp 3 in the direction of the loading and unloading operation station 10 reaches the adjacent position at the right-angle bend of the loading and unloading operation station 10; after reaching the position, the loading and unloading synchronous robot 16 moves, and the unloading mechanical gripper 48 of the loading and unloading synchronous robot 16 grabs the cast aluminum rotor 4 with the engraved hole completed and releases it onto the conveyor belt 49 for the next process; note that after each rhythmic movement, the unloading conveying hook cylinder 20 will have a reset action, thus preparing in advance for the next workpiece conveying; The loading mechanical gripper 47 places the already gripped cast aluminum rotor 4 with the engraved hole to be positioned into the accompanying fixture, which is synchronized with the unloading mechanical gripper 48's gripping action of the cast aluminum rotor 4 with the engraved hole completed; the gripping action of the loading mechanical gripper 47 of the cast aluminum rotor 4 with the engraved hole to be engraved is synchronized with the unloading mechanical gripper 48's release action of the cast aluminum rotor 4 with the engraved hole completed.

[0071] Preferably, the four hook cylinders 17-20 and the loading / unloading synchronous robot 16 are all controlled by a PLC controller to achieve sequential, rhythmic movements.

[0072] In step (3), during reaming, the metal filings adhering to the cast aluminum rotor 4 and the reamer 15 are removed simultaneously using the following method: When the reaming machine 27 is turned on, the vacuum suction pipe 32 located below the right-angle bend of the reaming operation station 12 is simultaneously connected. The opening of the vacuum suction pipe 32 is attached to the lower end face of the stepped positioning through hole 5 of the accompanying fixture 3 via the lifting cylinder 33. The lifting spindle box 34 of the reaming machine 27 moves down, so that the lower end of the flow-limiting sealing cover 35 located around the spindle 28 of the reaming machine 27 is attached to the upper end face of the accompanying fixture 3 and covers the cast aluminum rotor 4. After it is in place, the rotating reamer 15 of the reaming machine 27 continues to move down into the inner hole of the cast aluminum rotor 4 for reaming. During reaming, a negative pressure is generated between the vacuum suction pipe 32 and the inner hole of the cast aluminum rotor 4, and the metal filings formed during reaming are sucked away by the vacuum suction pipe 32. After reaming is completed, the rotating spindle box 34 moves down to the lower end face of the accompanying fixture 3. As the rotary reamer 15 exits the inner hole of the cast aluminum rotor, the negative pressure between the vacuum suction pipe 32 and the inner hole of the cast aluminum rotor 4 instantly expands into the upper flow-limiting sealing cover 35. Air outside the flow-limiting sealing cover 35 enters the cantilevered vortex jet pipe 41 and passes through the twisted airflow guide groove 51 on the inner wall of the cantilevered vortex jet pipe 41. Cyclone airflow is then blown out from the inner hole (swirling airflow limiting hole) of the cantilevered vortex jet pipe 41 to perform cyclone cleaning on the outer surface of the rotary reamer 15, blowing off the metal shavings adhering to the rotary reamer 15 and sucking them away through the vacuum suction pipe 32. After the cyclone cleaning of the reamer 15 is completed, the vacuum suction pipe 32 is closed. At the same time, the lifting spindle box 34 of the reaming machine 27 continues to move upward, causing the lower end of the elastic telescopic bellows 39 of the flow-limiting sealing cover 35 to disengage from the upper end face of the accompanying fixture 3, thus preparing for the reaming of the next cast aluminum rotor 4.

[0073] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor, characterized in that, The system includes a rectangular frame worktable, an annular right-angled rectangular slide groove on the upper surface of the rectangular frame worktable, a number of accompanying fixtures movably disposed within the annular right-angled rectangular slide groove, a stepped positioning through hole on the upper surface of the accompanying fixture for positioning the outer circle of the cast aluminum rotor, a square positioning post disposed at the lower part of the accompanying fixture and slidably connected to the annular right-angled rectangular slide groove, and guide rounded corners at the four corners of the square positioning post for translating along a 90-degree right-angle direction at the right-angle bends of the annular right-angled rectangular slide groove; and a [missing information - likely a number] on each of the four sides of the rectangular frame worktable. A hook cylinder with a hook head is used to push the accompanying clamp on the annular right-angled rectangular slide near the hook cylinder to move forward in a stepping manner; at the four right-angled corners of the annular right-angled rectangular slide, there are loading and unloading operation stations, engraving operation stations, reaming operation stations and unloading operation stations arranged in sequence; above the right-angled corner of the engraving operation station, there is a liftable engraving pressure head; above the right-angled corner of the reaming operation station, there is a liftable rotary reamer; and a loading and unloading synchronous robot is located between the unloading operation station and the loading and unloading operation stations.

2. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 1, characterized in that, The loading and unloading synchronous robot is positioned between the unloading operation station and the loading and unloading operation station, and close to the loading and unloading operation station. The hook cylinder includes an engraving conveying hook cylinder for pushing and conveying the accompanying clamp located at the right-angle turn of the loading and unloading operation station toward the engraving operation station, a reaming conveying hook cylinder for pushing and conveying the accompanying clamp located at the right-angle turn of the engraving operation station toward the reaming operation station, an unloading conveying hook cylinder for pushing and conveying the accompanying clamp located at the right-angle turn of the reaming operation station toward the unloading operation station, and an unloading conveying hook cylinder for pushing the accompanying clamp located at the right-angle turn of the unloading operation station toward the loading and unloading operation station to a position close to the loading and unloading synchronous robot for unloading.

3. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 1, characterized in that, The horizontal cross-sectional outline of the upper part of the accompanying fixture is a square outline. Each of the accompanying fixtures is arranged and abutted in sequence on the annular right-angled rectangular slide. At least one of the loading / unloading operation station, engraving operation station, reaming operation station and unloading operation station of the annular right-angled rectangular slide is provided with a vacancy for the accompanying fixture at the right-angle bend.

4. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 3, characterized in that, A 90-degree V-block is provided on the outer side of the right-angle bend at the reaming operation station to position the two right-angled sides of the traveling fixture's outline. A pair of positioning surfaces of the 90-degree V-block are respectively parallel to the adjacent two sides of the slide groove at the right-angle bend of the annular right-angled rectangular slide groove. A top-pressure cylinder is provided on the inner side of the right-angle bend at the reaming operation station to press and fix the traveling fixture and the cast aluminum rotor on the traveling fixture onto the 90-degree V-block. The top-pressure head of the top-pressure cylinder directly presses against the outer circle of the cast aluminum rotor, thereby enabling the traveling fixture and the cast aluminum rotor on the traveling fixture to be simultaneously and accurately positioned and pressed and fixed onto the 90-degree V-block.

5. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 1, characterized in that, A reaming machine is installed on one side of the inner frame of the rectangular frame worktable, and the rotary reamer is connected to the spindle of the reaming machine. A reaming synchronous chip remover is also installed at the reaming operation station of the rectangular frame worktable. The reaming synchronous chip remover includes a vacuum suction pipe located below the right-angle bend of the reaming operation station on the rectangular frame worktable. The inlet of the vacuum suction pipe faces upward and is directly opposite the stepped positioning through hole on the accompanying fixture. The inlet of the vacuum suction pipe is raised and lowered by a lifting cylinder. The reaming machine is equipped with a lifting spindle box, and a spindle is installed on the lifting spindle box. A flow-limiting sealing cover with its opening facing downward and elastically retractable in the vertical direction is installed at the lower end of the lifting spindle box of the reaming machine and at the periphery of the spindle of the reaming machine. The flow-limiting sealing cover has a number of flow-limiting holes.

6. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 5, characterized in that, The flow-limiting sealing cover includes an elastic telescopic bellows fixed to the lower end face of the lifting spindle box of the reaming machine, and a rigid sleeve connected to the lower end of the elastic telescopic bellows. A number of cantilevered swirl jets are arranged at intervals on the inner wall of the rigid sleeve. The inner hole of the cantilevered swirl jet is connected to the outside of the rigid sleeve. A number of spirally twisted airflow guiding grooves are arranged at intervals on the inner wall of the cantilevered swirl jet. The cantilevered swirl jet points towards the reamer and the nozzle of the cantilevered swirl jet is close to the outer circle of the rotating reamer, thereby forming a swirling airflow limiting hole in the inner hole of the cantilevered swirl jet with its nozzle aligned with the outer circle of the reamer.

7. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 6, characterized in that, The distance between the nozzle of the cantilevered swirl jet pipe and the outer circle of the reamer is 2-5mm; the total circumferential twist angle of the spiral airflow guide groove is 90°~120°.

8. The production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 7, characterized in that, The airflow guiding groove on the inner wall of the cantilevered swirl jet pipe is formed by pre-selecting a straight groove on the inner wall of the cantilevered swirl jet pipe, and then twisting the cantilevered swirl jet pipe in the circumferential direction at a certain angle through thermoplastic deformation.

9. A production line for engraving and reaming holes on a cast aluminum rotor with a right-angled rectangular circulating conveyor according to claim 8, characterized in that, The synchronous loading and unloading robot includes a loading and unloading base set on one side of the inner frame of the rectangular frame worktable, a loading and unloading cantilever frame set on the loading and unloading base and extending horizontally outward along the upper direction of the rectangular frame worktable to the outer side of the rectangular frame worktable, a common lifting seat slidably set below the loading and unloading cantilever frame in the horizontal direction, and a loading mechanical gripper and an unloading mechanical gripper respectively set on the common lifting seat.

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