Nut milling machine

Abstract

The present invention discloses a nut milling machine, which includes a workbench. A vertical turntable is rotatably installed on the workbench. A number of slots are annularly arranged on the outer side of the turntable. A nut body is installed in the slots. A number of connecting rods are annularly arranged on the turntable. The connecting rods are arranged in one-to-one correspondence with the slots. A rotating shaft is provided inside the slots. One end of the connecting rod is connected to the rotating shaft, and the other end is arranged in the slots. The rotating shaft is driven to rotate by a rotating motor. A fixing mechanism is arranged on the side of the connecting rod close to the slots. Milling slots stations and tapping stations are symmetrically arranged on both sides of the turntable. A milling slot mechanism is arranged at the milling slots station, and a tapping mechanism is arranged at the tapping station. The present invention completes milling slots and tapping on one machine, avoiding multiple loading and unloading operations, and has high work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of nut processing, especially the technical field of nut milling machines. Background Art

[0002] A nut is a screw cap, a part used for fastening by screwing together with a bolt or screw rod. It is an element that must be used in all manufacturing machinery. According to different materials, it is divided into several major types such as carbon steel, stainless steel, non-ferrous metals, etc.

[0003] During the processing of nuts, tapping is required for the inner holes of the nuts. For some nuts with special structures, annular grooves also need to be machined on the end faces of the nuts. In the prior art, these two processes are generally carried out separately, resulting in the need for multiple loading and unloading operations, which reduces the production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and propose a nut milling machine that can machine annular grooves and internal threads on one machine, with high production efficiency.

[0005] To achieve the above purpose, the present invention proposes a nut milling machine, including a workbench. A vertical turntable is rotatably installed on the workbench. A number of slots are annularly arranged on the outer side of the vertical turntable. A nut body is installed in the slots. A number of connecting rods are annularly arranged on the vertical turntable. The connecting rods are arranged in one-to-one correspondence with the slots. A rotating shaft is provided inside the slot. One end of the connecting rod is connected to the rotating shaft, and the other end is arranged in the slot. The rotating shaft is driven to rotate by a rotating motor. The rotating motor is installed on the right side of the vertical turntable. The connecting rod is installed on the left side of the vertical turntable. A fixing mechanism is provided on the side of the connecting rod close to the slot. The fixing mechanism includes a telescopic cylinder. The output end of the telescopic cylinder is provided with a central column. A number of double connecting rods are annularly arranged on the outer side of the central column. A fixing strip is installed in the middle of the double connecting rods. A sliding sleeve is sleeved on the central column. One end of the double connecting rod is hinged to the central column, and the other end is hinged to the sliding sleeve. A end cover is provided at the top of the sliding sleeve. A mini cylinder is embedded at the top of the central column. The output end of the mini cylinder is connected to the end cover. Milling groove stations and tapping stations are symmetrically arranged on both sides of the vertical turntable. A milling groove mechanism is provided at the milling groove station. The milling groove mechanism includes a milling groove moving component, a milling groove motor, and an annular groove milling cutter. The milling groove motor is installed on the milling groove moving component. The output end of the milling groove motor is provided with the annular groove milling cutter. The milling groove moving component drives the annular groove milling cutter to move towards the vertical turntable. A tapping mechanism is provided at the tapping station. The tapping mechanism includes a tapping moving component, a tapping motor, and a tap. The tapping motor is installed on the tapping moving component. The output end of the tapping motor is provided with the tap. The tapping moving component drives the tap to move towards the vertical turntable.

[0006] Preferably, a rotating shaft is provided at the center of the vertical turntable. Both ends of the rotating shaft are rotatably installed on the mounting seat, and the mounting seat is fixed on the upper surface of the workbench. The rotating shaft is driven to rotate by a driving motor.

[0007] Preferably, a pressure sensor is embedded at the center of the outer surface of the end cover. The annular groove milling cutter is installed on the tool holder. A receiving groove is provided at the center of the tool holder. A lifting cylinder is arranged in the receiving groove. The output end of the lifting cylinder is equipped with a lifting column. A thimble matching the pressure sensor is provided at the top of the lifting column. The milling groove moving assembly is a first X-axis linear motor. A first Y-axis linear motor is installed on the mover of the first X-axis linear motor. The milling groove motor is installed on the mover of the first Y-axis linear motor. A first clamping block is arranged at the milling groove station. The first clamping block is connected with a first clamping cylinder. The first clamping block clamps the nut body from the outside.

[0008] Preferably, columns are provided around the workbench. A top plate is provided at the top of the columns. The tapping mechanism is arranged on the left side of the tapping station. The tapping moving assembly is installed at the bottom of the top plate. The tapping moving assembly is a second X-axis linear motor. A second Y-axis linear motor is installed on the mover of the second X-axis linear motor. The tapping motor is installed on the mover of the second Y-axis linear motor. A positioning slot is provided at the center of the end face of the tap. An auxiliary mechanism is arranged on the right side of the tapping station. The auxiliary mechanism includes a positioning cylinder. The left end opening of the positioning cylinder is inserted into the annular slot of the nut body. A positioning plug is arranged inside the positioning cylinder. The positioning plug matches the positioning slot. The positioning plug is connected to the top wall of the positioning cylinder through a vertical rod. A dust suction pipe is connected to the right end opening of the positioning cylinder. The dust suction pipe is connected with a waste box. The waste box is connected with an exhaust fan. A moving cylinder is arranged at the bottom of the top plate. The output end of the moving cylinder is equipped with a moving plate. The moving plate is connected with the positioning cylinder. A second clamping block is arranged at the tapping station. The second clamping block is connected with a second clamping cylinder.

[0009] Preferably, a loading station is provided on the vertical turntable. A loading table is arranged outside the loading station. A loading cylinder is arranged on the loading table. A pushing block is arranged at the output end of the loading cylinder. The pushing block pushes the nut body into the slot.

[0010] Preferably, a blanking station is arranged between the loading station and the tapping station. A blanking cylinder is arranged on the right side of the blanking station. A pushing block is arranged at the output end of the blanking cylinder. The pushing block pushes the nut body out of the slot. An unloading inclined plate is arranged on the left side of the blanking station. The end of the unloading inclined plate is connected with a receiving box.

[0011] Preferably, a blanking groove is provided on the workbench. The blanking groove is located on the right side of the milling groove station. A blanking box is arranged at the bottom of the blanking groove.

[0012] Advantages of the present invention: The present invention completes milling grooves and tapping on one machine, avoiding multiple loading and unloading operations, and has high working efficiency; the inner hole of the nut is fixed by a fixing mechanism, and the outer part of the nut is clamped by a clamping block, with high clamping stability and good processing effect; when machining the annular groove, the inner hole of the nut is centered by the thimble and the pressure sensor at the center of the end cover to ensure the machining accuracy of the annular groove; when tapping, the accurate installation is ensured through the cooperation of the positioning slot and the positioning post, preventing the tapping from skewing and improving the product quality; the positioning cylinder can not only play a positioning role, but also collect the waste chips generated during tapping and discharge them through the dust suction pipe, automatically cleaning the tapping waste chips, which is very convenient.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a schematic diagram of the vertical turntable of the present invention;

[0016] Figure 3 is a schematic diagram of the milling groove mechanism of the present invention;

[0017] Figure 4 is a schematic diagram of the fixing mechanism of the present invention;

[0018] Figure 5 is a schematic diagram of the tapping mechanism of the present invention;

[0019] Figure 6 is a schematic diagram of the tool holder structure of the present invention;

[0020] Figure 7 is a schematic diagram of the installation of the annular groove milling cutter of the present invention.

[0021] In the figure: 1 - workbench, 2 - vertical turntable, 3 - connecting rod, 4 - fixing mechanism, 5 - grooving mechanism, 6 - tapping mechanism, 7 - auxiliary mechanism, 8 - loading table, 9 - unloading cylinder, 10 - grooving station, 11 - column, 12 - top plate, 13 - moving cylinder, 15 - unloading chute, 20 - tapping station, 21 - grooving, 22 - rotating shaft, 23 - mounting seat, 30 - loading station, 31 - rotating shaft, 32 - rotating motor, 40 - unloading station, 41 - telescopic cylinder, 42 - central column, 43 - double connecting rod, 44 - sliding sleeve, 45 - end cover, 46 - mini cylinder, 47 - pressure sensor, 51 - grooving moving component, 52 - annular groove milling cutter, 53 - tool holder, 54 - receiving groove, 55 - lifting cylinder, 56 - lifting column, 57 - ejector pin, 61 - tapping moving component, 62 - tap, 63 - positioning slot, 71 - positioning cylinder, 72 - positioning pin, 73 - dust suction pipe, 74 - waste bin, 75 - exhaust fan, 81 - loading cylinder, 82 - pushing block, 91 - discharging inclined plate, 92 - receiving box. Detailed implementation mode

[0022] Refer to Figures 1 to 7, a nut milling machine, comprising a workbench 1, on which a vertical turntable 2 is rotatably installed. A number of slots 21 are provided around the outside of the vertical turntable 2, and nut bodies are installed in the slots 21. A number of connecting rods 3 are provided around the vertical turntable 2, and the length of the connecting rods 3 can be adjusted. The connecting rods 3 are arranged in one-to-one correspondence with the slots 21. A rotating shaft 31 is provided inside the slot 21. One end of the connecting rod 3 is connected to the rotating shaft 31, and the other end is arranged in the slot 21. The rotating shaft 31 is driven to rotate by a rotating motor 32. The rotating motor 32 is installed on the right side of the vertical turntable 2, and the connecting rod 3 is installed on the left side of the vertical turntable 2. A fixing mechanism 4 is provided on the side of the connecting rod 3 close to the slot 21. The fixing mechanism 4 includes a telescopic cylinder 41. The output end of the telescopic cylinder 41 is provided with a central column 42. A number of double connecting rods 43 are provided around the outside of the central column 42. A fixing strip is installed in the middle of the double connecting rods 43. A sliding sleeve 44 is sleeved on the central column 42. One end of the double connecting rod 43 is hinged to the central column 42, and the other end of the double connecting rod 43 is hinged to the sliding sleeve 44. The top of the sliding sleeve 44 is provided with an end cover 45. A mini cylinder 46 is embedded at the top of the central column 42. The output end of the mini cylinder 46 is connected to the end cover 45. Milling groove stations 10 and tapping stations 20 are symmetrically provided on both sides of the vertical turntable 2. A milling groove mechanism 5 is provided at the milling groove station 10. The milling groove mechanism 5 includes a milling groove moving component 51, a milling groove motor, and an annular groove milling cutter 52. The milling groove motor is installed on the milling groove moving component 51. The output end of the milling groove motor is provided with the annular groove milling cutter 52. The milling groove moving component 51 drives the annular groove milling cutter 52 to move towards the vertical turntable 2. A tapping mechanism 6 is provided at the tapping station 20. The tapping mechanism 6 includes a tapping moving component 61, a tapping motor, and a tap 62. The tapping motor is installed on the tapping moving component 61. The output end of the tapping motor is provided with the tap 62. The tapping moving component 61 drives the tap 62 to move towards the vertical turntable 2. A rotating shaft 22 is provided at the center of the vertical turntable 2. Both ends of the rotating shaft 22 are rotatably installed on a mounting seat 23 through bearings. The mounting seat 23 is fixed on the upper surface of the workbench 1. The rotating shaft 22 is driven to rotate by a driving motor. A pressure sensor 47 is embedded at the center of the outer surface of the end cover 45. The annular groove milling cutter 52 is installed on a tool holder 53. A receiving groove 54 is provided at the center of the tool holder 53. A lifting cylinder 55 is provided in the receiving groove 54. The output end of the lifting cylinder 55 is installed with a lifting column 56. The top of the lifting column 56 is provided with a thimble 57 that matches the pressure sensor 47. The milling groove moving component 51 is a first X-axis linear motor. A first Y-axis linear motor is installed on the mover of the first X-axis linear motor. The milling groove motor is installed on the mover of the first Y-axis linear motor. A first clamping block is provided at the milling groove station 10. The first clamping block is connected to a first clamping cylinder. The first clamping block clamps the nut body from the outside. A first V-shaped groove is provided inside the slot 21, and a second V-shaped groove is provided on the clamping block. Columns 11 are provided around the workbench 1.The top of the column 11 is provided with a top plate 12. The tapping mechanism 6 is arranged on the left side of the tapping station 20. The tapping moving assembly 61 is installed at the bottom of the top plate 12. The tapping moving assembly 61 is a second X-axis linear motor. A second Y-axis linear motor is installed on the mover of the second X-axis linear motor. The tapping motor is installed on the mover of the second Y-axis linear motor. A positioning slot 63 is opened at the center of the end face of the tap 62. An auxiliary mechanism 7 is arranged on the right side of the tapping station 20. The auxiliary mechanism 7 includes a positioning cylinder 71. The left end opening of the positioning cylinder 71 is inserted into the annular slot of the nut body. A positioning plug 72 is arranged inside the positioning cylinder 71. The positioning plug 72 is matched with the positioning slot 63. The positioning plug 72 is connected to the top wall of the positioning cylinder 71 through a vertical rod. A dust suction pipe 73 is connected to the right end opening of the positioning cylinder 71. The dust suction pipe 73 is connected to a waste box 74. The waste box 74 is connected to an exhaust fan 75. A moving cylinder 13 is arranged at the bottom of the top plate 12. The output end of the moving cylinder 13 is installed with a moving plate. The moving plate is connected to the positioning cylinder 71. A second clamping block is arranged at the tapping station 20. The second clamping block is connected to a second clamping cylinder. A feeding station 30 is arranged on the vertical turntable 2. A feeding table 8 is arranged outside the feeding station 30. A feeding cylinder 81 is arranged on the feeding table 8. A pushing block 82 is arranged at the output end of the feeding cylinder 81. The pushing block 82 pushes the nut body into the slot 21. A blanking station 40 is arranged between the feeding station 30 and the tapping station 20. A blanking cylinder 9 is arranged on the right side of the blanking station 40. A pushing block is arranged at the output end of the blanking cylinder 9. The pushing block pushes the nut body out of the slot 21. A blanking inclined plate 91 is arranged on the left side of the blanking station 40. The end of the blanking inclined plate 91 is connected to a receiving box 92. A blanking groove 15 is opened on the workbench 1. The blanking groove 15 is located on the right side of the milling groove station 10. A blanking box is arranged at the bottom of the blanking groove 15.,

[0023] The working process of the present invention:

[0024] During the working process of the present invention, nuts are loaded from the feeding station, and the pushing block pushes the nut body into the slot 21. Then, the rotating motor 32 rotates the fixing mechanism to a position directly opposite the central hole of the nut. Next, the telescopic cylinder 41 drives the central column 42 to extend into the central hole, and the mini cylinder 46 drives the sliding sleeve 44 to shorten, causing the fixing strip to move outward and tighten the inner hole of the nut. Then, the vertical turntable 2 rotates the nut to the milling slot station, and the first clamping block cooperates with the slot to clamp the nut. Next, the milling slot mechanism moves closer to the nut. First, the lifting column extends out of the accommodating groove, and the pressure sensor 47 is pressurized through the ejector pin 57 to complete the central alignment. If not aligned, the position of the milling cutter is adjusted first, and then processing is carried out after alignment. Then, the vertical turntable rotates the nut to the tapping station, and the second clamping block clamps the nut. The moving cylinder first inserts the positioning cylinder 71 into the milled annular groove, and then drives the tapping mechanism to work. During tapping, the positioning insert post 72 in the positioning cylinder is inserted into the positioning slot 63 of the tap to prevent tapping deviation. The waste generated during tapping is collected in the positioning cylinder and discharged from the dust suction pipe. After tapping is completed, the nut rotates to the discharging station, and the nut is pushed by the pushing block onto the discharging inclined plate and falls into the receiving box.

[0025] The above embodiments are illustrative of the present invention, not limiting of the present invention. Any scheme obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. A nut milling machine, characterized in that: It includes a workbench (1), on which a vertical turntable (2) is rotatably installed. A number of slots (21) are provided in a ring on the outer side of the vertical turntable (2). A nut body is installed in the slots (21). A number of connecting rods (3) are provided in a ring on the vertical turntable (2). The connecting rods (3) are arranged in one-to-one correspondence with the slots (21). A rotating shaft (31) is provided on the inner side of the slots (21). One end of the connecting rod (3) is connected to the rotating shaft (31), and the other end is arranged in the slots (21). The rotating shaft (31) is driven to rotate by a rotating motor (32). The rotating motor (32) is installed on the right side surface of the vertical turntable (2). The connecting rod (3) is installed on the left side surface of the vertical turntable (2). A fixing mechanism (4) is provided on the side of the connecting rod (3) close to the slot (21). The fixing mechanism (4) includes a telescopic cylinder (41). The output end of the telescopic cylinder (41) is provided with a central column (42). A number of double connecting rods (43) are provided in a ring on the outer side of the central column (42). A fixing strip is installed in the middle of the double connecting rods (43). A sliding sleeve (44) is sleeved on the central column (42). One end of the double connecting rod (43) is hinged to the central column (42), and the other end is hinged to the sliding sleeve (44). A end cover (45) is provided at the top of the sliding sleeve (44). A mini cylinder (46) is embedded at the top of the central column (42). The output end of the mini cylinder (46) is connected to the end cover (45). Milling slot stations (10) and tapping stations (20) are symmetrically provided on both sides of the vertical turntable (2). A milling slot mechanism (5) is provided at the milling slot station (10). The milling slot mechanism (5) includes a milling slot moving component (51), a milling slot motor and an annular slot milling cutter (52). The milling slot motor is installed on the milling slot moving component (51). The output end of the milling slot motor is provided with the annular slot milling cutter (52). The milling slot moving component (51) drives the annular slot milling cutter (52) to move towards the vertical turntable (2). A tapping mechanism (6) is provided at the tapping station (20). The tapping mechanism (6) includes a tapping moving component (61), a tapping motor and a tap (62). The tapping motor is installed on the tapping moving component (61). The output end of the tapping motor is provided with the tap (62). The tapping moving component (61) drives the tap (62) to move towards the vertical turntable (2);A pressure sensor (47) is embedded at the center of the outer surface of the end cap (45). The annular groove milling cutter (52) is installed on the tool holder (53). A receiving groove (54) is provided at the center of the tool holder (53). A jacking cylinder (55) is arranged in the receiving groove (54). A jacking column (56) is installed at the output end of the jacking cylinder (55). A thimble (57) matching the pressure sensor (47) is provided at the top of the jacking column (56). The milling groove moving assembly (51) is a first X-axis linear motor. A first Y-axis linear motor is installed on the mover of the first X-axis linear motor. The milling groove motor is installed on the mover of the first Y-axis linear motor. A first clamp block is arranged at the milling groove station (10). The first clamp block is connected with a first clamping cylinder. The first clamp block clamps the nut body from the outside. Columns (11) are arranged around the workbench (1). A top plate (12) is provided at the top of the columns (11). The tapping mechanism (6) is arranged on the left side of the tapping station (20). The tapping moving assembly (61) is installed at the bottom of the top plate (12). The tapping moving assembly (61) is a second X-axis linear motor. A second Y-axis linear motor is installed on the mover of the second X-axis linear motor. The tapping motor is installed on the mover of the second Y-axis linear motor. A positioning slot (63) is provided at the center of the end face of the tap (62). An auxiliary mechanism (7) is arranged on the right side of the tapping station (20). The auxiliary mechanism (7) includes a positioning cylinder (71). The left end opening of the positioning cylinder (71) is inserted into the annular slot of the nut body. A positioning plug (72) is arranged inside the positioning cylinder (71). The positioning plug (72) matches the positioning slot (63). The positioning plug (72) is connected to the top wall of the positioning cylinder (71) through a vertical rod. A dust suction pipe (73) is connected to the right end opening of the positioning cylinder (71). The dust suction pipe (73) is connected to a waste box (74). The waste box (74) is connected to an exhaust fan (75). A moving cylinder (13) is arranged at the bottom of the top plate (12). A moving plate is installed at the output end of the moving cylinder (13). The moving plate is connected to the positioning cylinder (71). A second clamp block is arranged at the tapping station (20). The second clamp block is connected with a second clamping cylinder.; 2. The nut milling machine according to claim 1, wherein: A rotating shaft (22) is provided at the center of the vertical turntable (2). Both ends of the rotating shaft (22) are rotatably installed on the mounting base (23), and the mounting base (23) is fixed on the upper surface of the workbench (1). The rotating shaft (22) is driven to rotate by a driving motor.

3. The nut milling machine according to claim 1, characterized in that: A loading station (30) is provided on the vertical turntable (2). A loading table (8) is provided outside the loading station (30). A loading cylinder (81) is provided on the loading table (8). A pushing block (82) is provided at the output end of the loading cylinder (81). The pushing block (82) pushes the nut body into the slotted groove (21).

4. The nut milling machine according to claim 3, characterized in that: A blanking station (40) is provided between the loading station (30) and the tapping station (20). A blanking cylinder (9) is provided on the right side of the blanking station (40). A pushing block is provided at the output end of the blanking cylinder (9). The pushing block pushes the nut body out of the slotted groove (21). An unloading inclined plate (91) is provided on the left side of the blanking station (40). The end of the unloading inclined plate (91) is connected to a receiving box (92).

5. The nut milling machine according to claim 1, characterized in that: A blanking groove (15) is formed on the workbench (1). The blanking groove (15) is located on the right side of the milling groove station (10). A blanking box is provided at the bottom of the blanking groove (15).

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