Multi-head milling machine tool

Abstract

The invention relates to the technical field of machining, and particularly discloses a multi-head milling machine tool which comprises a machine body with a plurality of vertical working spindles, the machine body comprises a workbench and a fixed cross frame, a supporting mechanism is installed on one side of the fixed cross frame, and a plurality of tool bit mechanisms are arranged below the supporting mechanism. A transmission mechanism and a lubricating mechanism are arranged at the top end of the tool bit mechanism, and a protection mechanism is arranged on the periphery of the tool bit mechanism. The supporting mechanism comprises a supporting transverse plate and a supporting sliding rail. Through mutual cooperation of the supporting mechanism, the tool bit mechanism and the transmission mechanism, the device can be driven by using an existing control system, so that the use cost is reduced, the machining precision and synchronism are ensured, the structure is simpler, maintenance is convenient, in addition, a tool bit can be protected during machining, and the service life of the device is prolonged. Mutual interference during operation of the multiple tool bits is prevented, and the transmission position is lubricated.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a multi-head milling machine tool. Background Art

[0002] Milling machine, also known as milling machine, is a machine tool that mainly uses milling cutter to process various surfaces of workpieces. On the milling machine, the milling cutter mainly moves in rotation, while the movement of the workpiece and the milling cutter is the feed motion. This design enables the milling machine to process planes, grooves, gear teeth, threads, spline shafts and various complex surfaces and shapes.

[0003] In the Chinese patent with the publication number CN106238786B, a multi-head milling machine tool is mentioned, wherein the multi-head milling machine tool .... A plurality of cutter heads are respectively mounted on a plurality of cutter head fixtures, each cutter head fixture is provided with a Z-axis slideway, and each cutter head is slidably connected to the cutter head fixture via the Z-axis slideway.

[0004] The above-mentioned equipment adds multiple mounting frames and a corresponding number of cutter heads, so that when lighter workpieces such as plexiglass, resin, aluminum plates need to be hollowed out, multiple workpieces can be processed at the same time, or multiple cutter heads can jointly process one or more workpieces with more complicated processing processes, thereby greatly improving the working efficiency of the milling machine. However, since multiple cutter heads share two Y-axis slides and each cutter head and mounting frame require a separate drive motor, when multiple cutter heads operate together, not only a more precise control system is required to operate the position and speed of each cutter head to ensure processing accuracy and synchronization to ensure the yield, but also due to the relatively complex structure, it is more troublesome to maintain. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-head milling machine tool to solve the problems of high use cost and complex structure in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-head milling machine tool comprises a machine body with multiple vertical working spindles, the machine body comprises a workbench and a fixed cross frame, a support mechanism is installed on one side of the fixed cross frame, a plurality of tool head mechanisms are arranged below the support mechanism, a transmission mechanism and a lubrication mechanism are arranged at the top of the tool head mechanism, and a protective mechanism is arranged on the periphery of the tool head mechanism; the support mechanism comprises a support cross plate and a support slide rail, a tool head motor and a Z-axis motor are installed at the top of the support cross plate, the support cross plate is used to support the tool head motor and the Z-axis motor, the internal rotation of the support cross plate is connected with a tool head drive rod and a Z-axis drive rod, and the support cross plate is also used A cutter head mechanism supporting the bottom; the cutter head mechanism comprises a mounting frame, a Y-axis motor, a Z-axis slide rail, a threaded rod, a receiving slide, a mounting head and a connecting shaft, wherein the Y-axis motor is used to drive the mounting frame to move in the Y-axis direction to provide power; the transmission mechanism comprises a connecting box and a docking box, wherein the transmission mechanism is used to cooperate with the cutter head motor and the Z-axis motor to drive the threaded rod and the connecting shaft; the lubrication mechanism comprises an oil supply box, an air intake end cover and a sponge ring, wherein the lubrication mechanism is used to lubricate the transmission of the cutter head motor and the Z-axis motor; the protection mechanism comprises a half frame, an elastic rope and a protective curtain, wherein the elastic rope is used to lift the air intake end cover, and the protective curtain is used for protection.

[0008] Preferably: the Y-axis motor is installed on one side of the mounting frame, the Z-axis slide rail is installed on the inner side of the mounting frame, the receiving slide is slidably connected to the inner side of the mounting frame, the Z-axis slide rail is used to limit the sliding of the receiving slide, and the threaded rod passes through and is threadedly connected to the receiving slide.

[0009] Preferably: the mounting head is installed on one side of the receiving slide, a cutter head is installed at the bottom of the mounting head, the connecting shaft is installed above the mounting head, the connecting shaft passes through the mounting frame and the connecting box, the top end of the threaded rod passes through the mounting frame and is rotatably connected to the inside of the connecting box.

[0010] Preferably: the interior of the connection box is rotatably connected with a cutter head crown gear and a Z-axis crown gear, the cutter head crown gear is penetrated by the connection shaft, the top of the threaded rod is fixedly connected to the bottom of the Z-axis crown gear, the top of the cutter head crown gear is meshedly connected with a transmission gear set, the top of the Z-axis crown gear is meshedly connected with a connection gear, the transmission gear set and the connection gear are both rotatably connected to the interior of the connection box and the docking box.

[0011] Preferably, the docking box has a plug-in shaft and a unit shaft rotatably connected inside, the plug-in shaft and the unit shaft are fixedly connected with gear rings on their peripheries, the plug-in shaft is meshedly connected to the transmission gear set via the gear ring, and the unit shaft is meshedly connected to the connecting gear via the gear ring.

[0012] Preferably: the oil supply box is installed above the docking box, two connecting pipes are connected to the two sides of the oil supply box, the connecting pipes are plugged into the interior of the docking box, the sponge ring is located at the end of the connecting pipe away from the oil supply box, the sponge ring is embedded in the interior of the docking box, the sponge ring is located at both ends of the plug-in shaft and the unit shaft, and the air intake end cover is rotatably connected above the oil supply tank.

[0013] Preferably: the plug-in shaft is penetrated by the cutter head drive rod, the unit shaft is penetrated by the Z-axis drive rod, the sponge ring surrounds the periphery of the cutter head drive rod and the Z-axis drive rod, and the inner side of the sponge ring contacts the periphery of the cutter head drive rod and the Z-axis drive rod.

[0014] Preferably: two hydraulic cylinders are arranged above the half frame, the hydraulic cylinders are installed on both sides of the mounting frame, the output ends of the hydraulic cylinders are fixedly connected to the half frame, the lower ends of the elastic ropes are wrapped around the top of the half frame, the upper ends of the elastic ropes are wrapped around the top of the air intake end cover, and the protective curtain is installed below the half frame.

[0015] Preferably: a slide groove is provided at the bottom of the supporting cross plate, the docking box and the lubrication mechanism are both located inside the slide groove, the top of the mounting frame is rotatably connected to two supporting guide wheels, the bottom end of the supporting cross plate is fixedly connected to a supporting slide rail, the supporting guide wheel is located inside the supporting slide rail, and the supporting guide wheel is used to assist in supporting the mounting frame.

[0016] Preferably: an X-axis slide rail is installed above the workbench, both ends of the fixed cross frame are slidably connected above the X-axis slide rail, two Y-axis slide rails are installed on one side of the fixed cross frame, one side of the mounting frame is slidably connected to the Y-axis slide rails, a support frame is installed on one side of the supporting cross plate, and the bottom end of the support frame is installed on the side of the fixed cross frame away from the Y-axis slide rail.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention, through the cooperation of the supporting mechanism, the cutter head mechanism and the transmission mechanism, can drive the rotation of each cutter head and the Z-axis adjustment of the slide with the cutter head through a separate cutter head motor and a Z-axis motor, through a connecting box and a transmission group inside the docking box. In this way, not only can the existing control system be used for driving, thereby reducing the cost of use and ensuring processing accuracy and synchronization, but the structure is also simpler and convenient for maintenance.

[0019] 2. The present invention cooperates with the transmission mechanism, lubrication mechanism and protection mechanism, so that when the cutter head motor drives the plug-in shaft to rotate through the cutter head drive rod and when the Z-axis motor drives the unit shaft to rotate through the Z-axis drive rod, the cutter head can process the workpiece above the workbench. At this time, the hydraulic cylinder will operate to move the half frame downward and open the air intake end cover through the elastic rope, thereby allowing air to enter the interior of the oil supply box, so that the lubricating oil in the oil supply box can enter the interior of the docking box through the connecting pipe and be absorbed by the sponge rings at both ends of the plug-in shaft and the unit shaft, thereby lubricating the cutter head drive rod and the Z-axis drive rod during transmission to avoid overheating.

[0020] 3. The present invention provides a protective mechanism. While the lubrication mechanism lubricates the cutter head drive rod and the Z-axis drive rod, due to the operation of the hydraulic cylinder, the half frame with the protective curtain can half surround the periphery of the cutter head, thereby providing protection around the cutter head during processing. This not only avoids mutual interference during the operation of multiple cutter heads, but also prevents the cutter heads from accidentally touching the wire rope on the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 One of the three-dimensional views of the multi-head milling machine tool of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the machine body of the present invention;

[0023] Figure 3 For the present invention Figure 1 The structural diagram of the middle part;

[0024] Figure 4 It is a structural schematic diagram of the support mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the outside of the cutter head mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure inside the cutter head mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure inside the transmission mechanism of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the lubrication mechanism of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the protection mechanism of the present invention.

[0030] In the figure:

[0031] 1. Machine body; 11. Workbench; 12. X-axis slide rail; 13. Fixed cross frame; 14. Y-axis slide rail; 15. Cutter head motor; 16. Cutter head drive rod; 17. Z-axis motor; 18. Z-axis drive rod;

[0032] 2. Support mechanism; 21. Support horizontal plate; 22. Slide groove; 23. Support slide rail; 24. Support frame;

[0033] 3. Cutter head mechanism; 31. Mounting frame; 32. Y-axis motor; 33. Z-axis slide rail; 34. Threaded rod; 35. Supporting slide; 36. Mounting head; 37. Cutter head; 38. Connecting shaft; 39. Support guide wheel;

[0034] 4. Transmission mechanism; 41. Docking box; 42. Cutter head crown gear; 43. Transmission gear set; 44. Z-axis crown gear; 45. Docking gear; 46. Docking box; 47. Plug-in shaft; 48. Gear ring; 49. Unit shaft;

[0035] 5. Lubrication mechanism; 51. Oil supply tank; 52. Connecting pipe; 53. Air intake cover; 54. Sponge ring;

[0036] 6. Protective mechanism; 61. Half frame; 62. Hydraulic cylinder; 63. Elastic rope; 64. Protective curtain. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1-Figure 9 As shown, the present invention provides a multi-head milling machine tool, including a machine body 1 with multiple vertical working spindles, the machine body 1 includes a workbench 11 and a fixed horizontal frame 13, a support mechanism 2 is installed on one side of the fixed horizontal frame 13, a plurality of cutter head mechanisms 3 are arranged below the support mechanism 2, a transmission mechanism 4 and a lubrication mechanism 5 are arranged at the top of the cutter head mechanism 3, and a protection mechanism 6 is arranged on the periphery of the cutter head mechanism 3; a wire rope positioning and clamping mechanism in the prior art can be additionally arranged outside the workbench 11, which will not be described in detail here;

[0039] The support mechanism 2 includes a support cross plate 21 and a support slide rail 23. The top of the support cross plate 21 is equipped with a cutter head motor 15 and a Z-axis motor 17. The support cross plate 21 is used to support the cutter head motor 15 and the Z-axis motor 17. The inner rotation of the support cross plate 21 is connected with the cutter head drive rod 16 and the Z-axis drive rod 18. The support cross plate 21 is also used to support the cutter head mechanism 3 at the bottom.

[0040] The cutter head mechanism 3 includes a mounting frame 31, a Y-axis motor 32, a Z-axis slide rail 33, a threaded rod 34, a receiving slide 35, a mounting head 36 and a connecting shaft 38. The Y-axis motor 32 is used to drive the mounting frame 31 to move in the Y-axis direction to provide power;

[0041] The transmission mechanism 4 includes a connection box 41 and a docking box 46, and the transmission mechanism 4 is used to cooperate with the cutter head motor 15 and the Z-axis motor 17 to drive the threaded rod 34 and the connection shaft 38;

[0042] The lubrication mechanism 5 includes an oil supply box 51, an air intake end cover 53 and a sponge ring 54. The lubrication mechanism 5 is used to lubricate the drive of the cutter head motor 15 and the Z-axis motor 17;

[0043] The protection mechanism 6 includes a half frame 61, an elastic rope 63 and a protection curtain 64. The elastic rope 63 is used to lift the air intake end cover 53, and the protection curtain 64 is used for protection.

[0044] Reference Figure 6 In a further embodiment, the Y-axis motor 32 is installed on one side of the mounting frame 31, the Z-axis slide rail 33 is installed on the inner side of the mounting frame 31, the receiving slide 35 is slidably connected to the inner side of the mounting frame 31, the Z-axis slide rail 33 is used to limit the sliding of the receiving slide 35, and the threaded rod 34 passes through the threaded connection of the receiving slide 35.

[0045] In this embodiment, the output end of the Y-axis motor 32 has a driving gear for docking with the rack on one side of the fixed horizontal frame 13, thereby driving the entire installation frame 31 to move along the direction of the fixed horizontal frame 13; the Z-axis slide rail 33 is an I-shaped slide rail, and a matching slide seat is installed on one side of the receiving slide 35 to guide the receiving slide 35 to slide in the direction of the Z-axis slide rail 33, and the threaded rod 34 drives the receiving slide 35 to slide.

[0046] Reference Figure 6 In a further embodiment, the mounting head 36 is installed on one side of the receiving slide 35, a cutter head 37 is installed at the bottom of the mounting head 36, a connecting shaft 38 is installed above the mounting head 36, the connecting shaft 38 passes through the mounting frame 31 and the connecting box 41, and the top end of the threaded rod 34 passes through the mounting frame 31 and is rotatably connected to the inside of the connecting box 41.

[0047] In this embodiment, a support block is provided on the inner side of the mounting frame 31 corresponding to the threaded rod 34, and the threaded rod 34 passes through the support block, and bearings are provided at the upper and lower ends of the threaded rod 34 passing through the mounting frame 31; the mounting head 36 is a tool holder for installing the tool head 37, and the connecting shaft 38 is connected to the driving shaft of the mounting head 36, so when the connecting shaft 38 rotates, the tool head 37 installed at the bottom of the mounting head 36 will rotate, thereby processing the workpiece; the cross-section of the connecting shaft 38 is a cross-shaped plug-in shaft, so it can rotate while receiving the up and down movement of the slide 35.

[0048] Reference Figure 7-Figure 8 In a further embodiment, the inside of the connecting box 41 is rotatably connected with the cutter head crown gear 42 and the Z-axis crown gear 44, the cutter head crown gear 42 is penetrated by the connecting shaft 38, the top of the threaded rod 34 is fixedly connected to the bottom of the Z-axis crown gear 44, the top of the cutter head crown gear 42 is meshedly connected with a transmission gear set 43, and the top of the Z-axis crown gear 44 is meshedly connected with a connecting gear 45, and the transmission gear set 43 and the connecting gear 45 are both rotatably connected inside the connecting box 41 and the docking box 46.

[0049] In this embodiment, the cutter head crown gear 42 cooperates with the cross-section of the connecting shaft 38 to open a matching hole, so that the connecting shaft 38 can pass through the cutter head crown gear 42, and then when the cutter head crown gear 42 rotates, it can drive the connecting shaft 38 to rotate, thereby allowing the cutter head 37 to rotate; there are two transmission chambers inside the connecting box 41 and the docking box 46, and a large amount of lubricating oil is poured into the transmission chamber; the transmission gear set 43 is composed of two connecting gears 45, and the transmission gear set 43 is mainly used to stagger the cutter head drive rod 16 that passes through the plug-in shaft 47 and the vertically plugged connecting shaft 38, and the top end of the connecting shaft 38 after passing through the connecting box 41 and the cutter head crown gear 42 is located on the outside of the supporting cross plate 21.

[0050] Reference Figure 7-Figure 8 In a further embodiment, the interior of the docking box 46 is rotatably connected with a plug-in shaft 47 and a unit shaft 49, and the peripheries of the plug-in shaft 47 and the unit shaft 49 are fixedly connected with a gear ring 48. The plug-in shaft 47 is meshedly connected to the transmission gear set 43 through the gear ring 48, and the unit shaft 49 is meshedly connected to the connecting gear 45 through the gear ring 48.

[0051] In this embodiment, when the cutter head driving rod 16 is inserted into the interior of the plug-in shaft 47, the cutter head crown gear 42 will rotate through the transmission gear set 43, and the Z-axis driving rod 18 will rotate the Z-axis crown gear 44 through the connecting gear 45 after being inserted into the interior of the unit shaft 49, thereby driving the cutter head 37 to rotate and the threaded rod 34 to rotate; the connecting gear 45 and the transmission gear set 43 composed of the connecting gear 45 are both connected to the interior of the connecting box 41 and the docking box 46 through their shaft rotation, and bearings are installed on the shaft.

[0052] Reference Figure 5-Figure 8 In a further embodiment, the oil supply box 51 is installed above the docking box 46, and two connecting pipes 52 are connected to both sides of the oil supply box 51. The connecting pipes 52 are plugged into the interior of the docking box 46, and the sponge ring 54 is located at the end of the connecting pipe 52 away from the oil supply box 51. The sponge ring 54 is embedded in the interior of the docking box 46. The sponge ring 54 is located at both ends of the plug-in shaft 47 and the unit shaft 49, and the air intake end cover 53 is rotatably connected to the top of the oil supply tank 51.

[0053] In this embodiment, an injection port is provided at one end of the oil supply tank 51 for replenishing lubricating liquid therein; there is also an air inlet on the top of the oil supply tank 51, and the air inlet end cover 53 is embedded in the air inlet, and the air inlet end cover 53 is connected to the air inlet of the oil supply tank 51 by a hinge, so that after the air inlet end cover 53 is opened, the external air can enter the interior of the oil supply tank 51, so that the lubricating liquid in the oil supply tank 51 is affected by the atmospheric pressure and slowly enters the interior of the docking box 46 through the connecting pipe 52 and is absorbed by the sponge ring 54, and then the sponge ring 54 lubricates the cutter head drive rod 16 and the cutter head drive rod 16; the docking box 46 has a hole at the connection between the corresponding connecting pipe 52.

[0054] Reference Figure 4-Figure 8 The plug-in shaft 47 is penetrated by the cutter head drive rod 16, the unit shaft 49 is penetrated by the Z-axis drive rod 18, the sponge ring 54 surrounds the periphery of the cutter head drive rod 16 and the Z-axis drive rod 18, and the inner side of the sponge ring 54 contacts the periphery of the cutter head drive rod 16 and the Z-axis drive rod 18.

[0055] In this embodiment, there are four sponge rings 54 inside the docking box 46, and there are a large number of protrusions on the inner side of the sponge ring 54 so that they can contact the surface of the tool head drive rod 16 and the Z-axis drive rod 18, so that during the movement of the installation frame 31, the tool head drive rod 16 and the Z-axis drive rod 18 can still be transmitted with the plug-in shaft 47 and the unit shaft 49.

[0056] Reference Figure 5 and Fig. 9 In a further embodiment, two hydraulic cylinders 62 are arranged above the half frame 61, and the hydraulic cylinders 62 are installed on both sides of the mounting frame 31. The output ends of the hydraulic cylinders 62 are fixedly connected to the half frame 61, and the lower ends of the elastic ropes 63 are wound around the top of the half frame 61, and the upper ends of the elastic ropes 63 are wound around the top of the air intake end cover 53, and the protective curtain 64 is installed below the half frame 61.

[0057] In this embodiment, guide wheels are provided above the docking box 46 and on the periphery of the mounting frame 31 for guiding the elastic rope 63; the hydraulic cylinder 62 is a prior art control system connected to the outside; when the half frame 61 moves downward, the elastic rope 63 will be pulled to stretch, thereby allowing the air intake end cover 53 to rotate and open the air intake port above the oil supply tank 51. However, since the lubrication mechanism 5 is located as a whole below the supporting cross plate 21, the top of the air intake end cover 53 is affected by the supporting cross plate 21 when it is opened. Therefore, when the hydraulic cylinder 62 contracts, the half frame 61 moves upward, and at this time the elastic rope 63 will be loosened, thereby allowing the air intake end cover 53 to close the air intake port of the oil supply tank 51 again.

[0058] Reference Figure 4-Figure 5In a further embodiment, a slide groove 22 is opened at the bottom of the supporting cross plate 21, the docking box 46 and the lubrication mechanism 5 are both located inside the slide groove 22, the top of the mounting frame 31 is rotatably connected to two supporting guide wheels 39, the bottom end of the supporting cross plate 21 is fixedly connected to a supporting slide rail 23, the supporting guide wheel 39 is located inside the supporting slide rail 23, and the supporting guide wheel 39 is used to assist in supporting the mounting frame 31.

[0059] In this embodiment, the cutter head drive rod 16 and the Z-axis drive rod 18 are composed of a rectangular shaft rod and round shaft rods at both ends, wherein the round shaft rod is located inside the supporting cross plate 21 and is equipped with gears and is connected to the gears of the motor through a chain, and the rectangular shaft rod is located on the inner side of the slide groove 22 so that it can pass through the plug-in shaft 47 and the unit shaft 49 inside the docking box 46; the support guide wheel 39 and the support slide rail 23 are used to assist in supporting the mounting frame 31, while reducing the influence of resonance generated when the cutter head 37 rotates on the support mechanism 2 and the fixed cross frame 13.

[0060] Reference Figure 1-Figure 3 In a further embodiment, an X-axis slide rail 12 is installed above the workbench 11, both ends of the fixed cross frame 13 are slidably connected above the X-axis slide rail 12, two Y-axis slide rails 14 are installed on one side of the fixed cross frame 13, one side of the mounting frame 31 is slidably connected to the Y-axis slide rails 14, a support frame 24 is installed on one side of the supporting cross plate 21, and the bottom end of the support frame 24 is installed on the side of the fixed cross frame 13 away from the Y-axis slide rail 14.

[0061] In this embodiment, the workbench 11, the X-axis slide rail 12, the fixed cross frame 13, the Y-axis slide rail 14, the tool head motor 15, and the Z-axis motor 17 are all prior art.

[0062] The working principle of the present invention is as follows:

[0063] When it is necessary to process the workpiece clamped by the wire rope positioning device above the workbench 11, the external controller can drive the cutter head motor 15, the Z-axis motor 17, the Y-axis motor 32 and the motor on one side of the workbench 11. When the motor on one side of the workbench 11 is in operation, the fixed cross frame 13 can slide along the direction of the X-axis slide rail 12 with the support mechanism 2, the cutter head mechanism 3, the transmission mechanism 4, the lubrication mechanism 5, and the protection mechanism 6. The operation of the Y-axis motor 32 can make the mounting frame 31 slide along the direction of the Y-axis slide rail 14 with the transmission mechanism 4, the lubrication mechanism 5 and the protection mechanism 6. The operation of the cutter head motor 15 will cause the cutter head drive rod 16 inside the supporting cross plate 21 to rotate through the chain at its output end. The operation of the Z-axis motor 17 will The chain at its output end makes the Z-axis driving rod 18 inside the supporting cross plate 21 rotate; the cutter head driving rod 16 passes through the plug-in shaft 47 inside the docking box 46, so after being driven by the transmission gear set 43, the cutter head crown gear 42 can rotate with the connecting shaft 38, and then can rotate the cutter head 37 installed at the bottom of the mounting head 36; the Z-axis motor 17 passes through the unit shaft 49 inside the docking box 46, so after being driven by the connecting gear 45, the Z-axis crown gear 44 can rotate with the threaded rod 34, so that the height of the receiving slide 35 can be adjusted. Therefore, only the existing control system is needed for driving, and there is no need to upgrade and develop a new control system, thereby reducing the use cost, ensuring the processing accuracy and synchronization, and the structure is also simpler and convenient for maintenance;

[0064] After the above-mentioned cutter head motor 15 drives the plug-in shaft 47 to rotate through the cutter head drive rod 16 so that the connecting shaft 38 rotates with the cutter head 37, thereby processing the workpiece, and the Z-axis motor 17 drives the unit shaft 49 to rotate through the Z-axis drive rod 18 so that the receiving slide 35 can adjust the processing height of the cutter head 37, the controller will operate the hydraulic cylinder 62 to move the half frame 61 downward and open the air intake end cover 53 by pulling the elastic rope 63. At this time, the external air can enter the interior of the oil supply tank 51, and then the atmospheric pressure transports the lubricating oil in the oil supply tank 51 to the interior of the docking box 46 through the connecting pipe 52, and is absorbed by the sponge rings 54 at both ends of the plug-in shaft 47 and the unit shaft 49, thereby lubricating the cutter head drive rod 16 and the Z-axis drive rod 18 during transmission to avoid overheating;

[0065] The operation of the hydraulic cylinder 62 will not only start the lubrication mechanism 5 to lubricate the cutter head drive rod 16 and the Z-axis drive rod 18, but also allow the half frame 61 to slide downward with the protective curtain 64 and semi-surround the lower end of the mounting frame 31. At this time, the protective curtain 64 will semi-surround the cutter head 37, and can then provide protection around the cutter head 37 during processing. This can not only avoid mutual interference during the operation of multiple cutter heads 37, but also prevent the cutter head 37 from accidentally touching the wire rope on the workbench 11.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-head milling machine tool, comprising a machine body (1) with multiple vertical working spindles, characterized in that: The machine body (1) comprises a workbench (11) and a fixed horizontal frame (13); a support mechanism (2) is installed on one side of the fixed horizontal frame (13); a plurality of cutter head mechanisms (3) are arranged below the support mechanism (2); a transmission mechanism (4) and a lubrication mechanism (5) are arranged at the top of the cutter head mechanism (3); and a protective mechanism (6) is arranged on the periphery of the cutter head mechanism (3); The support mechanism (2) comprises a support cross plate (21) and a support slide rail (23); a cutter head motor (15) and a Z-axis motor (17) are installed on the top of the support cross plate (21); the support cross plate (21) is used to support the cutter head motor (15) and the Z-axis motor (17); a cutter head drive rod (16) and a Z-axis drive rod (18) are rotatably connected inside the support cross plate (21); and the support cross plate (21) is also used to support the cutter head mechanism (3) at the bottom; The tool head mechanism (3) comprises a mounting frame (31), a Y-axis motor (32), a Z-axis slide rail (33), a threaded rod (34), a receiving slide (35), a mounting head (36) and a connecting shaft (38), wherein the Y-axis motor (32) is used to drive the mounting frame (31) to move in the Y-axis direction to provide power; The transmission mechanism (4) comprises a connection box (41) and a docking box (46), and the transmission mechanism (4) is used to cooperate with the cutter head motor (15) and the Z-axis motor (17) to drive the threaded rod (34) and the connection shaft (38); The lubricating mechanism (5) comprises an oil supply box (51), an air intake end cover (53) and a sponge ring (54), and the lubricating mechanism (5) is used to lubricate the drive of the cutter head motor (15) and the Z-axis motor (17); The protection mechanism (6) comprises a half frame (61), an elastic rope (63) and a protection curtain (64), wherein the elastic rope (63) is used to lift the air intake end cover (53), and the protection curtain (64) is used for protection.

2. A multi-head milling machine tool according to claim 1, characterized in that: The Y-axis motor (32) is installed on one side of the mounting frame (31), the Z-axis slide rail (33) is installed on the inner side of the mounting frame (31), the receiving slide (35) is slidably connected to the inner side of the mounting frame (31), the Z-axis slide rail (33) is used to limit the sliding of the receiving slide (35), and the threaded rod (34) passes through and is threadedly connected to the receiving slide (35).

3. A multi-head milling machine tool according to claim 1, characterized in that: The mounting head (36) is mounted on one side of the receiving slide (35); a cutter head (37) is mounted on the bottom of the mounting head (36); the connecting shaft (38) is mounted above the mounting head (36); the connecting shaft (38) passes through the mounting frame (31) and the connecting box (41); the top end of the threaded rod (34) passes through the mounting frame (31) and is rotatably connected to the inside of the connecting box (41).

4. A multi-head milling machine tool according to claim 1, characterized in that: The connection box (41) is internally rotatably connected with a cutter head crown gear (42) and a Z-axis crown gear (44); the cutter head crown gear (42) is penetrated by the connection shaft (38); the top end of the threaded rod (34) is fixedly connected to the bottom of the Z-axis crown gear (44); the top of the cutter head crown gear (42) is meshedly connected with a transmission gear set (43); the top of the Z-axis crown gear (44) is meshedly connected with a connection gear (45); the transmission gear set (43) and the connection gear (45) are both rotatably connected inside the connection box (41) and the docking box (46).

5. A multi-head milling machine tool according to claim 4, characterized in that: The interior of the docking box (46) is rotatably connected with a plug-in shaft (47) and a unit shaft (49); the outer peripheries of the plug-in shaft (47) and the unit shaft (49) are fixedly connected with a gear ring (48); the plug-in shaft (47) is meshedly connected to the transmission gear set (43) via the gear ring (48); and the unit shaft (49) is meshedly connected to the connecting gear (45) via the gear ring (48).

6. A multi-head milling machine tool according to claim 1, characterized in that: The oil supply box (51) is installed above the docking box (46), and two connecting pipes (52) are connected to the two sides of the oil supply box (51). The connecting pipes (52) are plugged into the interior of the docking box (46). The sponge ring (54) is located at the end of the connecting pipe (52) away from the oil supply box (51). The sponge ring (54) is embedded in the interior of the docking box (46). The sponge ring (54) is located at both ends of the plug-in shaft (47) and the unit shaft (49). The air intake end cover (53) is rotatably connected to the top of the oil supply box (51).

7. A multi-head milling machine tool according to claim 6, characterized in that: The plug-in shaft (47) is penetrated by the cutter head drive rod (16), the unit shaft (49) is penetrated by the Z-axis drive rod (18), the sponge ring (54) surrounds the periphery of the cutter head drive rod (16) and the Z-axis drive rod (18), and the inner side of the sponge ring (54) contacts the periphery of the cutter head drive rod (16) and the Z-axis drive rod (18).

8. The multi-head milling machine tool according to claim 1, characterized in that: Two hydraulic cylinders (62) are arranged above the half frame (61), and the hydraulic cylinders (62) are installed on both sides of the installation frame (31). The output ends of the hydraulic cylinders (62) are fixedly connected to the half frame (61). The lower end of the elastic rope (63) is wound around the top of the half frame (61), and the upper end of the elastic rope (63) is wound around the top of the air intake end cover (53). The protective curtain (64) is installed below the half frame (61).

9. The multi-head milling machine tool according to claim 1, characterized in that: A slide groove (22) is provided at the bottom of the supporting transverse plate (21), the docking box (46) and the lubrication mechanism (5) are both located inside the slide groove (22), the top end of the mounting frame (31) is rotatably connected to two supporting guide wheels (39), the bottom end of the supporting transverse plate (21) is fixedly connected to a supporting slide rail (23), the supporting guide wheel (39) is located inside the supporting slide rail (23), and the supporting guide wheel (39) is used to assist in supporting the mounting frame (31).

10. The multi-head milling machine tool according to claim 1, characterized in that: An X-axis slide rail (12) is installed above the workbench (11), two ends of the fixed cross frame (13) are slidably connected to the top of the X-axis slide rail (12), one side of the fixed cross frame (13) is installed with two Y-axis slide rails (14), one side of the installation frame (31) is slidably connected to the Y-axis slide rails (14), and a support frame (24) is installed on one side of the supporting cross plate (21), and the bottom end of the support frame (24) is installed on the side of the fixed cross frame (13) away from the Y-axis slide rail (14).

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