Indexing positioning right-angle milling head

Abstract

The utility model discloses an indexing positioning right-angle milling head which comprises a right-angle transmission box, a connecting disc fixedly connected above the right-angle transmission box, a milling cutter butt joint piece fixedly connected with one side of the driving end of the right-angle transmission box in a butt joint mode, a milling cutter head rotationally connected with one side of a transmission shaft of the milling cutter butt joint piece, and an oil inlet pipe fixedly connected with one side of the oil inlet end of the right-angle transmission box. A cooling assembly is fixedly connected to the side surface of the milling cutter butt-joint piece close to the milling cutter head; by means of the adjustable cooling system, the spraying angle and the atomization effect of cooling liquid can be dynamically adjusted according to the real-time temperature of the milling cutter head, it is guaranteed that a cutting area is in the optimal cooling state all the time, a cooling blind area caused by traditional fixed spraying is avoided, and the influence of excessive splashing of the cooling liquid on the machining precision is effectively prevented; and the service life of the cutter is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of right-angle milling head equipment, specifically an indexing and positioning right-angle milling head. Background Technology

[0002] As a key functional component of CNC machine tools, right-angle milling heads are widely used in multi-angle milling of complex workpieces in fields such as mold processing and aerospace. Traditional right-angle milling heads transmit spindle power to the vertical direction through bevel gear sets. However, existing cooling systems often use fixed nozzles to spray coolant directionally into the cutting area, which limits the coverage of coolant and makes it impossible to dynamically adjust the spray angle according to the tool wear condition, resulting in excessive local temperature rise and accelerated tool wear. The lack of oil circuit self-locking design makes it easy for oil to flow back, resulting in insufficient lubrication inside the transmission box. Although some improvement solutions have introduced spring return sealing plates or indexing feedback mechanisms, problems such as incomplete closure after seal wear, accumulation of indexing errors, and uneven cooling atomization still exist.

[0003] For example, according to patent publication number CN219632689U, a dividing positioning right-angle milling head is disclosed. This patent uses a fixing part 1 consisting of a connecting plate 1, a positioning screw, a fastening sleeve, and an annular sealing groove, and a fixing part 2 consisting of a connecting plate 2, a connecting hole, and an annular sealing plate. This is to cooperate with the second oil filling pipe 2 so that it can be disassembled and connected to the first oil filling pipe. When the reset part designed inside the second oil filling pipe is damaged in the future, only the second oil filling pipe needs to be replaced.

[0004] The sealing of the circular sealing plate in this patent relies on the purely mechanical gravity reset of the return spring. Under conditions of high oil viscosity or equipment tilting, insufficient spring reset force can easily lead to incomplete closure of the sealing plate, failing to completely block oil backflow. Furthermore, the return spring is prone to fatigue deformation due to long-term high-frequency compression-release cycles, resulting in delayed sealing plate closure response or attenuation of preload, further exacerbating the risk of seal failure. Summary of the Invention

[0005] The purpose of this utility model is to provide an indexing and positioning right-angle milling head in order to solve the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a right-angle milling head with indexing and positioning, comprising: a right-angle transmission box, a connecting plate fixedly connected above the right-angle transmission box, a milling cutter docking part fixedly connected to one side of the driving end of the right-angle transmission box, a milling cutter head rotatably connected to one side of the transmission shaft of the milling cutter docking part, an oil inlet pipe fixedly connected to one side of the oil inlet of the right-angle transmission box, and a cooling component fixedly connected to the side of the milling cutter docking part near the milling cutter head;

[0007] The cooling assembly cools the surface of the high-speed rotating milling cutter head by rotating at an angle on the side of the milling cutter mating part.

[0008] As a further embodiment of this utility model: the cooling assembly includes a controller fixedly connected to the side of the milling cutter docking part near the milling cutter head, a micro pusher fixedly connected to the side of the controller, a slide plate fixedly connected to the side of the micro pusher, a slot opened in the slide plate, a limit plate slidably connected in the slot, a telescopic rod fixedly connected between the limit plate and the micro pusher, the telescopic rod fixedly connected to the middle position of the side of the micro pusher, an adjuster fixedly connected above the end of the slide plate, an adjusting shaft rotatably connected to the inner side of the slide plate, a spray pipe rotatably connected to the side of the adjusting shaft, a nozzle fixedly connected to one end of the inlet of the spray pipe, an infusion hose fixedly connected to one end of the delivery port of the nozzle, and a grid mesh fixedly welded to the inner side of the outlet of the spray pipe.

[0009] As a further embodiment of this utility model: a first connecting plate is fixedly welded to the surface of the oil inlet pipe near the oil inlet, an oil delivery pipe is fixedly connected to the oil inlet side of the oil inlet pipe, and a second connecting plate is fixedly welded to the surface of the oil delivery pipe near the oil outlet. A first slot is formed on the surface of the first connecting plate, a second slot is formed on the surface of the second connecting plate, and a movable clamping plate is rotatably connected to the inner side of the second slot via a rotating shaft. A fixing bolt is fixedly screwed onto the surface of the movable clamping plate. A sealing ring groove is formed on the surface of the oil inlet side of the oil inlet pipe, and a sealing strip is fixedly connected to the surface of the oil outlet side of the oil delivery pipe.

[0010] As a further embodiment of this utility model: an upper pipe is fixedly welded above the oil pipeline, a movable seat is fixedly provided inside the upper pipe, a connecting rod is rotatably connected to the side of the movable seat through a movable shaft, and a sealing cap matching the inner diameter of the oil pipeline is fixedly connected to the end of the connecting rod.

[0011] As a further embodiment of this utility model: the cooling components are provided in two sets, symmetrically distributed on both sides of the milling cutter docking part; the telescopic rod pushes the limiting plate to slide inside the slide plate; the limiting plate is used to limit the maximum angle of rotation of the spray pipe; the output shaft below the regulator passes through the slide plate wall and is rotatably connected to the regulating shaft; the regulator is electrically connected to the controller through a power line; the grid is used to diffuse the cooling liquid sprayed by the spray pipe; and the end of the infusion hose is used to connect to other cooling equipment.

[0012] As a further embodiment of this utility model: the dimensions of the first connecting plate and the second connecting plate are matched, the second connecting plate is rotated by the movable clamping plate and is movably engaged in the inner side of the first slot, and the fixing bolt passes through the movable clamping plate and the first slot to achieve a fixed connection between the oil inlet pipe and the oil delivery pipe.

[0013] As a further embodiment of this utility model: the connecting rod drives the sealing cover to rotate around the movable axis of the movable seat under the push of the oil, and the sealing cover is used to prevent the oil from flowing back.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes an adjustable cooling system to dynamically adjust the coolant spray angle and atomization effect based on the real-time temperature of the milling cutter head, ensuring that the cutting area is always in the optimal cooling state. This avoids the cooling blind spots caused by traditional fixed spraying and effectively prevents excessive coolant splashing from affecting machining accuracy, thereby improving the surface quality of the machined surface and the tool life.

[0016] The lubrication system adopts a self-sealing oil circuit design. Through the oil pressure-driven sealing cover opening and closing mechanism, it ensures a stable supply of lubricating oil while completely eliminating the risk of oil backflow and leakage. Combined with the anti-vibration locking structure, the pipeline connection can still maintain a reliable seal under high-speed milling conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the indexing and positioning right-angle milling head described in this utility model;

[0018] Figure 2 This is a schematic diagram of the back structure of the indexing and positioning right-angle milling head described in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the milling cutter head in the indexing and positioning right-angle milling head described in this utility model;

[0020] Figure 4 This is a schematic diagram of the side structure of the milling cutter mating part in an indexing and positioning right-angle milling head according to the present invention;

[0021] Figure 5 This is a schematic diagram of the cooling assembly in a right-angle milling head with indexing and positioning according to the present invention;

[0022] Figure 6 This is a schematic diagram of the grid structure in the indexing and positioning right-angle milling head of this utility model;

[0023] Figure 7 This is a schematic diagram of the lubrication mechanism in a right-angle milling head with indexing and positioning according to the present invention;

[0024] Figure 8 This is a schematic diagram of the sealing cover in a right-angle milling head with indexing and positioning according to the present invention.

[0025] In the diagram: 1. Right-angle transmission box; 2. Connecting plate; 3. Milling cutter docking part; 4. Milling cutter head; 5. Oil inlet pipe; 6. Cooling assembly; 7. Oil delivery pipe; 8. First connecting plate; 9. Second connecting plate; 10. First slot; 11. Second slot; 12. Movable clamping plate; 13. Fixing bolt; 14. Sealing ring groove; 15. Sealing strip; 16. Upper connecting pipe; 17. Movable seat; 18. Connecting rod; 19. Sealing cover; 61. Controller; 62. Miniature pusher; 63. Slide plate; 64. Limiting plate; 65. Telescopic rod; 66. Adjuster; 67. Adjusting shaft; 68. Spray pipe; 69. Spray head; 610. Infusion hose; 611. Grille. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0028] Reference Figures 1 to 8In this embodiment of the present invention, a right-angle milling head with indexing and positioning includes: a right-angle transmission box 1, the top of which is fixedly connected to a connecting plate 2 via a flange structure for docking with a machine tool spindle; the horizontal drive end of the right-angle transmission box 1 is fixedly connected to a milling cutter docking piece 3 via bolts; the drive shaft of the milling cutter docking piece 3 is rotatably connected to the milling cutter head 4 via a tapered roller bearing to achieve power transmission in the right-angle direction; an oil inlet pipe 5 is welded to the oil inlet end of the side wall of the right-angle transmission box 1 for supplying oil to the lubrication system; two sets of cooling components 6 are symmetrically installed on both sides of the milling cutter docking piece 3, and dynamic cooling of the milling cutter head 4 is achieved by adjusting the angle.

[0029] The cooling assembly 6 includes a controller 61 fixed to the side of the milling cutter docking part 3. The controller 61 integrates a temperature sensor and control circuit. A micro pusher 62 is fixed to its side wall by screws. A slide plate 63 is fixedly connected to the side of the micro pusher 62. A slot is opened in the slide plate 63. A limit plate 64 is slidably connected in the slot. A telescopic rod 65 is fixedly connected between the limit plate 64 and the micro pusher 62. The telescopic rod 65 is fixedly connected to the middle position of the side of the micro pusher 62. An adjuster 66 is welded to the end of the slide plate 63. Its output shaft passes through the side wall of the slide plate 63 and is keyed to the adjusting shaft 67. The adjusting shaft 67 is rotatably connected to the spray pipe 68 through a rolling bearing. A nozzle 69 is welded to the inlet end of the spray pipe 68. The nozzle 69 is connected to the infusion hose 610 through a quick-connect coupling. A grid mesh 611 is embedded in the outlet of the spray pipe 68.

[0030] When the temperature of the milling cutter head 4 exceeds the set threshold, the controller 61 activates the micro pusher 62, and the telescopic rod 65 pushes the limit plate 64 to slide along the slide plate 63 to the preset stroke. At the same time, the regulator 66 drives the adjusting shaft 67 to rotate, causing the spray pipe 68 to deflect around the axis by 15 to 60 degrees, so that the nozzle 69 is aligned with the cutting edge of the milling cutter head 4. The coolant is pumped into the spray pipe 68 through the infusion hose 610, and after being atomized by the grid 611, it forms a fan-shaped jet that covers the milling cutter head 4. The sliding limit function of the limit plate 64 can prevent the spray pipe 68 from swinging excessively, which would cause the nozzle 69 to interfere with the milling cutter head 4.

[0031] The first connecting disc 8 is welded to the oil inlet end of the oil inlet pipe 5, and the end face of the first groove 10 of the annular array is machined. The second connecting disc 9 is welded to the oil outlet end of the oil delivery pipe 7. The surface of the second connecting disc 9 is provided with a second groove 11. The movable clamping plate 12 is hinged in the second groove 11 by a pin. The movable clamping plate 12 has a through hole and is screwed with a fixing bolt 13. During installation, the second connecting disc 9 is rotated until the movable clamping plate 12 is aligned with the first groove 10. The fixing bolt 13 is tightened so that the movable clamping plate 12 presses against the first connecting disc 8. At the same time, the fluororubber sealing strip 15 at the oil outlet end of the oil delivery pipe 7 is embedded in the sealing ring groove 14 of the oil inlet pipe 5 to form an end face seal.

[0032] The top of the oil supply pipe 7 is welded with an upper connecting pipe 16, and a movable seat 17 is fixedly installed in its inner cavity. The movable seat 17 is hinged to a connecting rod 18 via a pin. A sealing cap 19 matching the inner diameter of the oil supply pipe 7 is welded to the end of the connecting rod 18. The surface of the sealing cap 19 is covered with nitrile rubber. When oil flows from the oil supply pipe 7 to the oil inlet pipe 5, the oil pressure pushes the sealing cap 19 to rotate counterclockwise by 90 degrees around the movable seat 17, opening the oil passage. When the oil supply stops, the sealing cap 19 resets and closes under the action of gravity, preventing the lubricating oil from flowing back. The upper connecting pipe 16 provides clearance for the rotation of the sealing cap 19.

[0033] The working principle of this utility model is as follows:

[0034] The right-angle transmission box 1 converts the machine tool spindle power into vertical transmission through the internal orthogonal bevel gear set, driving the transmission shaft of the milling cutter docking part 3 to rotate at a set indexing angle, thereby driving the milling cutter head 4 to complete right-angle milling. During the cutting process, the controller 61 activates the micro pusher 62 based on the temperature feedback signal of the milling cutter head 4, driving the telescopic rod 65 to push the slide plate 63 to move along the guide trajectory of the limit plate 64, limiting the maximum rotation angle of the spray pipe 68, and preventing the outlet of the spray pipe 68 from contacting the milling cutter head 4. At the same time, the regulator 66 controls the spray pipe 68 to deflect around the axis through the adjusting shaft 67, so that the nozzle 69 and the cutting edge of the milling cutter head 4 form the optimal spray angle. The external coolant is pumped into the spray pipe 68 through the liquid delivery hose 610, and the columnar liquid flow is decomposed into atomized particles through the grid 611. The pressure covers the cutting contact area of ​​the milling cutter head 4, realizing the rapid conduction of cutting heat and the removal of heat through air film insulation.

[0035] In the lubrication system, oil enters the inlet pipe 5 directly from the end of the oil supply pipe 7. The outlet pressure of the oil supply pipe 7 pushes the sealing cover 19 to rotate counterclockwise ninety degrees around the movable axis of the movable seat 17, opening the oil passage. When the oil flow reaches the set value, the sealing strip 15 and the sealing ring groove 14 form an end face contact seal to prevent high-pressure oil leakage. When the oil supply stops, the sealing cover 19 automatically resets and closes under the action of gravity to prevent the lubricating oil inside the right angle transmission box 1 from flowing back. The upper pipe 16 provides rotation space for the opening action of the sealing cover 19. Its inner cavity is not connected to the oil supply pipeline. The movable clamp 12 presses the second connecting plate 9 into the first slot 10 through the locking force of the fixing bolt 13 to form a rigid connection interface to resist the pipeline loosening caused by milling vibration. The spray pipes 68 of the two sets of cooling components 6 can independently adjust the swing range to achieve synchronous cooling of the front and rear cutting faces of the milling cutter head 4 and chip flushing.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An indexable positioning right angle cutter head, characterized by, Include: The right angle transmission box (1) is connected with the connecting disc (2) on the top, the milling cutter butt joint (3) is fixedly connected on the driving end of the right angle transmission box (1), the transmission shaft side of the milling cutter butt joint (3) is rotatably connected with the milling cutter head (4), the oil inlet side of the right angle transmission box (1) is fixedly connected with the oil inlet pipe (5), the side of the milling cutter butt joint (3) close to the milling cutter head (4) is fixedly connected with the cooling assembly (6). The cooling assembly (6) is used for cooling the surface of the high-speed rotating milling cutter head (4) by angle rotation on the side of the milling cutter butt joint (3).

2. A dividing and positioning right angle cutter head according to claim 1, characterized in that, The cooling assembly (6) includes the controller (61) fixedly connected on the side of the milling cutter butt joint (3) close to the milling cutter head (4), the micro pusher (62) fixedly connected on the side of the controller (61), the sliding plate (63) fixedly connected on the side of the micro pusher (62), the notch is formed in the sliding plate (63), the limiting plate (64) is slidably connected in the notch, the telescopic rod (65) is fixedly connected between the limiting plate (64) and the micro pusher (62), the telescopic rod (65) is fixedly connected at the middle position of the side of the micro pusher (62), the adjuster (66) is fixedly connected on the end of the sliding plate (63), the adjusting shaft (67) is rotatably connected on the inner side of the sliding plate (63), the spray pipe (68) is rotatably connected on the side of the adjusting shaft (67), the nozzle (69) is fixedly connected on the water inlet end of the spray pipe (68), the infusion hose (610) is fixedly connected on the conveying port end of the nozzle (69), and the grid net (611) is fixedly welded on the inner side of the water outlet of the spray pipe (68).

3. The indexable positioning right angle cutter head according to claim 1, characterized in that, The first connecting disc (8) is fixedly welded on the surface of the oil inlet end of the oil inlet pipe (5), the oil inlet side of the oil inlet pipe (5) is fixedly connected with the oil delivery pipe (7), the second connecting disc (9) is fixedly welded on the surface of the oil outlet end of the oil delivery pipe (7), the first clamping groove (10) is formed in the surface of the first connecting disc (8), the second clamping groove (11) is formed in the surface of the second connecting disc (9), the movable clamping plate (12) is rotatably connected on the inner side of the second clamping groove (11) through the rotating shaft, the fixed bolt (13) is fixedly screwed on the surface of the movable clamping plate (12), the sealing ring groove (14) is formed in the surface of the oil inlet side of the oil inlet pipe (5), and the sealing strip (15) is fixedly connected on the surface of the oil outlet side of the oil delivery pipe (7).

4. A dividing and positioning right angle cutter head according to claim 3, characterized in that, The upper connecting pipe (16) is fixedly welded on the upper side of the oil delivery pipe (7), the movable seat (17) is fixedly arranged on the inner side of the upper connecting pipe (16), the connecting rod (18) is rotatably connected on the side of the movable seat (17) through the movable shaft, and the sealing cover (19) matched with the inner diameter of the oil delivery pipe (7) is fixedly connected on the end of the connecting rod (18).

5. The indexable positioning right angle cutter head according to claim 2, wherein, The cooling assembly (6) is provided with two groups, which are symmetrically distributed on both sides of the milling cutter butt joint (3), the telescopic rod (65) pushes the limiting plate (64) to slide in the inside of the sliding plate (63), the limiting plate (64) is used for limiting the maximum angle of rotation of the spraying pipe (68), the output shaft below the adjuster (66) penetrates through the wall surface of the sliding plate (63) and is rotationally connected with the adjusting shaft (67), the adjuster (66) is electrically connected with the controller (61) through the power line, the grid net (611) is used for diffusing the cooling liquid sprayed by the spraying pipe (68), and the end of the infusion hose (610) is used for being connected with other cooling equipment.

6. A dividing and positioning right angle cutter head according to claim 3, wherein, The first connecting disc (8) is matched with the size of the second connecting disc (9), the second connecting disc (9) is rotationally connected with the movable clamping plate (12) and is clamped in the inside of the first clamping groove (10), and the fixed bolt (13) penetrates through the movable clamping plate (12) and the first clamping groove (10) to realize the fixed connection between the oil inlet pipe (5) and the oil conveying pipe (7).

7. An indexable positioning right angle cutter head according to claim 4, characterized in that, The connecting rod (18) drives the sealing cover (19) to rotate around the movable shaft of the movable seat (17) under the pushing of the oil body, and the sealing cover (19) is used for preventing the backflow of the oil body.

Images