A 360 degree indexing swing head

Abstract

The application provides a 360-degree indexing swing head applied to the technical field of indexing swing heads of machine tools, which comprises a stator shell internally provided with a rotor chamber and a speed reduction chamber, a driven rotor shaft pipe is coaxially assembled in the rotor chamber through a bearing structure, and cylindrical rollers are vertically and uniformly distributed outside the driven rotor shaft pipe; the stator shell is assembled with a worm transmission shaft provided with a worm portion, driving pump blades are arranged at both ends of the worm transmission shaft, and the driving pump blades are arranged in a ring-shaped pump chamber cover of a C-shaped inner lining plate; the C-shaped inner lining plate is internally provided with symmetrical liquid supply channels which are connected with the ring-shaped pump chamber cover and a middle circular backflow hole, and a passive centrifugal unit is arranged in the backflow hole; the application relies on the driving pump blades of the transmission shaft to cooperate with the built-in oil way to form a closed-loop lubricating structure, is matched with a centrifugal filtering structure, a visible observation structure and a convenient dismounting and cleaning structure, can realize continuous indexing operation, has high structural integration, and is suitable for continuous machining of precise machine tools.

Description

Technical Field

[0001] This application relates to the field of machine tool indexing head technology, and in particular to a 360-degree indexing head. Background Technology

[0002] Machine tools rely on indexing heads to achieve multi-position cutting and processing, and are widely used in the fields of precision molds and complex curved surface parts processing in aerospace. The indexing accuracy, running stability and continuous working capability of the indexing head directly determine the overall machining quality.

[0003] Existing 360-degree indexing oscillating heads generally adopt a passive lubrication structure, relying solely on oil immersion in an oil bath or fixed-point oil injection to achieve lubrication of the transmission pair. Under long-term high-frequency continuous 360-degree rotation conditions, the meshing friction between the worm and the roller will continuously generate high temperatures. High-temperature oil is prone to accumulate at the meshing part of the worm and the roller, causing high-temperature deformation of the components. On the other hand, it will generate fine metal shavings and sludge impurities. If these impurities remain in the transmission lubrication area for a long time, they will continuously aggravate the accumulation of micro-wear on the transmission pair, causing the indexing repeatability accuracy to gradually deviate.

[0004] Therefore, we propose a 360-degree segmented oscillating head to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to address the technical problems of existing indexing swivel heads, such as lack of closed-loop lubrication, inability to dynamically collect impurities, lack of visibility of lubrication conditions, difficulty in cleaning and maintenance, and easy degradation of accuracy over long-term operation. Compared with existing technologies, this application provides a 360-degree indexing swivel head, including: A stator housing, wherein a rotor compartment and a reduction gear compartment are provided inside the stator housing; The driven rotor shaft tube is coaxially rotatably connected to the rotor housing via a bearing structure. Several cylindrical rollers are rotatably connected at equal angles on the circumferential side of the driven rotor shaft tube. The axis of the cylindrical rollers intersects with and is perpendicular to the axis of the driven rotor shaft tube. The swivel ring seat is detachably mounted on the end of the driven rotor shaft tube; The C-shaped inner liner is detachably installed inside the rotor compartment. The two ends of the C-shaped inner liner are symmetrically provided with annular pump compartment covers. The inner wall of the C-shaped inner liner is provided with a circular reflux hole in the middle. The C-shaped inner liner is provided with two sets of symmetrically arranged liquid supply channels. The annular pump compartment cover and the circular reflux hole are connected through the liquid supply channels. The passive centrifugal unit is rotatably connected to the circular reflux hole and is used to separate impurities in the oil. A worm gear drive shaft is rotatably connected to a rotor housing. The worm gear drive shaft has a worm section that meshes with cylindrical rollers. Both ends of the worm gear drive shaft are symmetrically equipped with active pump blades, which are located in corresponding annular pump housings. The active pump blades are used to rotate with the worm gear drive shaft and push the oil in the annular pump housing to the meshing point between the worm section and the cylindrical rollers by drawing in oil under negative pressure and pressurizing it. The drive unit, installed in the reduction gearbox, is used to drive the worm gear transmission shaft.

[0006] Furthermore, the bearing structure includes an upper bearing cover and a lower bearing cover symmetrically installed on the upper and lower sides of the stator housing. An upper bearing component is installed between the upper bearing cover and the top of the driven rotor shaft tube, and an upper sealing ring is clamped between the upper bearing component and the upper bearing cover. A lower bearing component is installed between the lower bearing cover and the bottom of the driven rotor shaft tube, and a lower sealing ring is clamped between the lower bearing cover and the lower bearing component.

[0007] Furthermore, the drive unit includes a servo motor, a motor connecting plate is encapsulated on the open side of the reduction gearbox, the output end of the servo motor passes through the motor connecting plate and extends into the reduction gearbox, one end of the worm gear drive shaft passes through the rotor compartment and extends into the reduction gearbox, and a reduction gear set is provided between the output end of the servo motor and the end of the worm gear drive shaft.

[0008] Furthermore, the end face of the active pump blade is provided with several L-shaped centrifugal channels evenly distributed at equal angles. The input end of the L-shaped centrifugal channel is located inside the annular pump chamber cover and is provided with a V-shaped liquid pushing groove. The output end of the L-shaped centrifugal channel extends to the outside of the annular pump chamber cover and is located on one side of the worm gear. The active pump blade is provided with a spline groove, and the active pump blade is sleeved to the end of the worm gear drive shaft through the spline groove.

[0009] Furthermore, the output end of the liquid supply channel is provided with an output hole, which is located inside the annular pump compartment cover. The input end of the liquid supply channel is provided with a C-shaped input hole, which is connected to the circular return hole. The C-shaped input holes on the two sets of liquid supply channels are arranged in a rotationally symmetrical manner, and the liquid inlet direction of the C-shaped input hole is tangent to the circumferential direction of the circular return hole.

[0010] Furthermore, the passive centrifugation unit includes a passive centrifugation blade rotatably connected to the circular reflux port. One end of the passive centrifugation blade extends into the circular reflux port and is fixed with a conical filter screen. A C-shaped collection port edge is fixed on the side of the conical filter screen away from the passive centrifugation blade.

[0011] Furthermore, the stator housing is provided with an observation through hole coaxial with the circular reflux hole, and an oil window unit is detachably installed on the outer port of the observation through hole; The outer side of the C-shaped inner liner is provided with a flange ring coaxial with the circular reflux hole. The oil window unit includes a pressure cap, the flange ring is clamped between the pressure cap and the observation through hole, and a transparent oil window plate is sealed on the pressure cap. A magnetic column is fixed to the inner side of the transparent oil window plate. The end of the magnetic column away from the transparent oil window plate extends into the conical filter screen and is fixed with a bowl-shaped scraper that matches the edge of the C-shaped collection port.

[0012] Furthermore, the stator housing is also provided with a heat dissipation unit, which includes an outer C-shaped heat dissipation fin that fits against the outside of the stator housing. A heat-conducting ring sleeve coaxially arranged with the flange ring is fixed in the middle of the outer C-shaped heat dissipation fin. The heat-conducting ring sleeve is sleeved on the outside of the flange ring. The end of the heat-conducting ring sleeve away from the outer C-shaped heat dissipation fin extends to the rotor compartment and is fixed with an inner C-shaped heat-conducting plate. The inner C-shaped heat-conducting plate fits against the outer arc of the C-shaped inner liner plate. The heat-conducting ring is stacked on the outside of the flange ring and together they are clamped between the gland and the observation hole.

[0013] Furthermore, a heat insulation plate is provided on the inner circumference of the C-shaped inner liner.

[0014] Compared to existing technologies, the advantages of this application are: This invention utilizes an active oil pump structure driven by a worm gear transmission shaft, combined with symmetrical tangential oil circuits inside a C-shaped inner liner, to form a self-driven closed-loop lubrication system for the entire machine. This eliminates the need for an external oil pump, enabling real-time, forced, and uniform lubrication of the transmission pairs during the 360-degree indexing process. This completely solves the problems of delayed oil supply and localized dry friction caused by insufficient oil in traditional oscillating heads. Simultaneously, the invention employs a tangential inlet-driven passive centrifugal unit rotation, relying on the kinetic energy of the oil flow to achieve dynamic filtration without power. This allows for the targeted collection and purification of metal shavings and sludge generated during lubrication, effectively suppressing the decay of indexing accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front structure of this application; Figure 2 This is a schematic diagram of the overall bottom structure of this application; Figure 3 This is a schematic diagram of the exploded structure of this application; Figure 4 This is a schematic diagram of the stator housing structure proposed in this application; Figure 5 This is an exploded structural diagram of the stator housing and its internal components as proposed in this application; Figure 6 This is a frontal exploded view of the C-shaped inner liner plate proposed in this application; Figure 7This is a schematic diagram of the exploded side structure of the C-shaped inner liner plate proposed in this application; Figure 8 This is a perspective view of the liquid supply channel proposed in this application; Figure 9 This is a schematic diagram of the structure of the active pump blade proposed in this application; Figure 10 This is a schematic diagram of the passive centrifuge unit proposed in this application; Figure 11 This is a schematic diagram of the cross-sectional structure of this application; Figure 12 for Figure 11 Enlarged structural diagram of section A in the middle; Figure 13 This is a schematic diagram of the oil flow direction of the active pump blades proposed in this application; Figure 14 This is a schematic diagram of the oil flow direction between the C-type input port and the passive centrifugal unit proposed in this application; Figure 15 This is a schematic diagram of the oil circulation flow direction in the rotor chamber proposed in this application.

[0016] Explanation of the labels in the diagram: 1. Drive unit; 11. Servo motor; 12. Motor connection plate; 13. Reduction gear set; 2. Stator housing; 201. Gearbox; 202. Rotor compartment; 203. Observation hole; 21. Upper bearing cover; 211. Upper sealing ring; 212. Upper bearing assembly; 22. Lower bearing cover; 221. Lower sealing ring; 222. Lower bearing assembly; 3. Swinging ring seat; 4. Heat dissipation unit; 41. Outer C-shaped heat dissipation fins; 42. Inner C-shaped heat conduction plate; 43. Heat conduction ring sleeve; 5. Oil window unit; 51. Cover; 52. Transparent oil window panel; 53. Cup-shaped scraper; 54. Magnetic column; 6. Driven rotor shaft tube; 61. Cylindrical roller; 7. Worm gear drive shaft; 71. Worm section; 72. Active pump impeller; 721. V-shaped liquid pushing groove; 722. L-shaped centrifugal through groove; 723. Spline groove; 8. C-shaped inner liner; 81. Annular pump compartment cover; 82. Circular reflux hole; 83. Flange ring; 84. Liquid supply channel; 841. Output hole; 842. C-shaped input hole; 85. Heat insulation plate; 9. Passive centrifuge unit; 91. Passive centrifuge blades; 92. Conical filter screen; 93. C-shaped collection port. Detailed Implementation

[0017] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0018] Example: This invention provides a 360-degree graduated swing head; please refer to [link / reference]. Figure 1 - Figure 15 It is assembled from a drive unit 1, a stator housing 2, a swing head ring seat 3, a heat dissipation unit 4, an oil window unit 5, a driven rotor shaft tube 6, a worm gear drive shaft 7, a C-shaped inner liner plate 8, and a passive centrifugal unit 9. The components work together to achieve the functions of self-circulating lubrication, dynamic impurity collection, visual observation, and convenient cleaning and maintenance.

[0019] For details, please refer to the following first. Figure 1 - Figure 3 The stator housing 2 serves as the load-bearing base for the entire machine. The internal cavity of the stator housing 2 is divided into a rotor compartment 202 and a reduction compartment 201.

[0020] The driven rotor shaft tube 6 is coaxially rotatably connected to the inside of the rotor housing 202 via a bearing structure. This bearing structure consists of an upper bearing cover 21, a lower bearing cover 22, an upper bearing component 212, a lower bearing component 222, an upper sealing ring 211, and a lower sealing ring 221. The upper bearing cover 21 and the lower bearing cover 22 are symmetrically fixedly installed on the upper and lower sides of the stator housing 2. The upper bearing component 212 is assembled between the upper bearing cover 21 and the top of the driven rotor shaft tube 6, and the upper sealing ring 211 is clamped between the upper bearing component 212 and the upper bearing cover 21 to achieve a top rotational seal. The lower bearing component 222 is assembled between the lower bearing cover 22 and the bottom of the driven rotor shaft tube 6, and the lower sealing ring 221 is clamped between the lower bearing cover 22 and the lower bearing component 222 to achieve a bottom rotational seal. The entire structure ensures high-precision, low-damping rotation of the driven rotor shaft tube 6, while also providing good sealing and leak-proof performance and preventing the intrusion of external impurities.

[0021] Several cylindrical rollers 61 are rotatably connected at equal angles to the circumference of the driven rotor shaft tube 6. The axes of the cylindrical rollers 61 intersect and are perpendicular to the axis of the driven rotor shaft tube 6. This orthogonal arrangement can form a stable envelope meshing transmission with the worm gear part 71, supporting the driven rotor shaft tube 6 to achieve 360-degree continuous rotation indexing without dead angles. The swing head ring seat 3 is detachably installed at the end of the driven rotor shaft tube 6 for mounting tooling or workpieces. The detachable structure facilitates adaptation to different processing conditions.

[0022] Please refer to this first. Figure 3The drive unit 1 is the power input structure for the entire machine. Drive unit 1 includes a servo motor 11, a motor connecting plate 12, and a reduction gear set 13. The motor connecting plate 12 is sealed within the opening of the reduction chamber 201. The servo motor 11 is fixedly mounted on the outside of the motor connecting plate 12, with its output end extending through the motor connecting plate 12 into the reduction chamber 201. One end of the worm gear drive shaft 7 extends through the rotor chamber 202 into the reduction chamber 201. The reduction gear set 13 is assembled between the output end of the servo motor 11 and the end of the worm gear drive shaft 7. During operation, the power output by the servo motor 11 is reduced in speed and increased in torque by the reduction gear set 13, precisely driving the worm gear drive shaft 7 to rotate at a uniform speed, effectively reducing start-stop impact and ensuring indexing and rotational accuracy and stability.

[0023] The worm gear drive shaft 7 is rotatably mounted inside the rotor compartment 202. The worm shaft 7 has a worm section 71 on its shaft body, which meshes with the cylindrical roller 61 to achieve power conversion and continuous 360-degree indexing operation. The worm gear drive shaft 7 has symmetrically arranged drive pump blades 72 at both ends. The drive pump blades 72 are fixed to the ends of the worm gear drive shaft 7 via a spline groove 723 at the center position, and can rotate synchronously with the worm gear drive shaft 7 without slippage or lag.

[0024] Please refer to this first. Figure 9 and Figure 13 The end face of the active pump blade 72 is provided with several L-shaped centrifugal channels 722 evenly distributed at equal angles. The input end of the L-shaped centrifugal channel 722 is provided with a V-shaped liquid pushing channel 721 and is located inside the annular pump chamber cover 81. The output end of the L-shaped centrifugal channel 722 extends to the outside of the annular pump chamber cover 81 and is directly opposite the meshing area between the worm gear 71 and the cylindrical roller 61. During the rotation of the worm gear drive shaft 7, the active pump blade 72 rotates synchronously at high speed. The oil inside the L-shaped centrifugal channel 722 is thrown out at high speed from the output end by centrifugal force, which greatly increases the fluid velocity and reduces the pressure at the output end. This causes a continuous negative pressure effect to be formed at the input end of the L-shaped centrifugal channel 722, which in turn forms a stable negative pressure suction inside the annular pump housing 81. This negative pressure suction is transmitted along the liquid supply channel 84 and the C-shaped input hole 842 to the circular return hole 82, where it is used to adsorb the oil in the rotor housing 202 for return. At the same time, in conjunction with the flow-gathering and pushing effect of the V-shaped pusher groove 721, the lubricating oil stored inside the annular pump housing 81 can be efficiently extracted and pushed to the core meshing friction area after being pressurized by the L-shaped centrifugal channel 722, so as to achieve the purpose of lubrication as it rotates and forced heat dissipation at fixed points.

[0025] Please refer to this first. Figure 4 - Figure 8The C-shaped inner liner 8 is detachably installed inside the rotor compartment 202. Annular pump compartment covers 81 are symmetrically arranged at both ends of the C-shaped inner liner 8, and a circular return hole 82 is opened on the inner wall in the middle. Two sets of liquid supply channels 84 are symmetrically arranged inside the C-shaped inner liner 8, connecting the two annular pump compartment covers 81 on both sides to the circular return hole 82 in the middle, forming a complete closed-loop oil circuit that is symmetrical and bidirectionally interconnected. An output hole 841 is provided at the output end of the liquid supply channel 84, located inside the annular pump compartment cover 81, for outputting clean lubricating oil. A C-shaped input hole 842 is provided at the input end of the liquid supply channel 84, connecting to the circular return hole 82. The two sets of C-shaped input holes 842 are arranged rotationally symmetrically, and the liquid inlet direction is tangent to the circumferential direction of the circular return hole 82.

[0026] During indexing operation, the active pump impeller 72 rotates to generate negative pressure to draw in and pressurize oil, pushing the lubricating oil inside the annular pump housing 81 to the meshing area between the worm gear 71 and the cylindrical roller 61, completing the lubrication of the friction pair and heat removal. The contaminated lubricating oil, carrying metal shavings and sludge, converges to the circular return hole 82 under the action of oil pressure and gravity. Subsequently, the contaminated lubricating oil enters the liquid supply channel 84 tangentially through two sets of symmetrically arranged C-shaped inlet holes 842, and then flows back to the annular pump housing 81 on both sides through the liquid supply channel 84 and the outlet hole 841, completing a complete closed-loop oil circuit circulation. This circulation process is entirely achieved by the rotational power of the equipment itself, without the need for external oil supply and circulation equipment, resulting in a high degree of structural integration. Furthermore, the continuous tangential oil intake of the C-shaped inlet holes 842 can provide rotational power for the passive centrifugal unit 9.

[0027] The passive centrifugal unit 9 is rotatably connected inside the circular reflux hole 82. The passive centrifugal unit 9 includes passive centrifugal blades 91, a conical filter screen 92, and a C-shaped collection port edge 93. The passive centrifugal blades 91 are rotatably mounted at the port of the circular reflux hole 82. The conical filter screen 92 is fixed inside the passive centrifugal blades 91, and the C-shaped collection port edge 93 is fixed at the large-diameter end of the conical filter screen 92. During oil circulation, the tangential oil flow drawn in by the C-shaped inlet hole 842 continuously impacts the passive centrifugal blades 91, driving the passive centrifugal blades 91 and the conical filter screen 92 to rotate at high speed as a whole. When the dirty lubricating oil flows through the high-speed rotating conical filter screen 92, solid-liquid separation is achieved under the action of centrifugal force. The clean lubricating oil passes through the mesh and enters the liquid supply channel 84 for recycling, while metal shavings, solid sludge, and wear impurities are trapped on the outside of the conical filter screen 92 and continuously collected towards the large-diameter end under the action of centrifugal slinging. Finally, all of them are concentrated and stored inside the C-shaped collection port edge 93, realizing the fixed-point collection of impurities and avoiding impurities from spreading in the oil circuit and repeatedly wearing the precision transmission pair.

[0028] The stator housing 2 has an observation through-hole 203 coaxial with the circular return hole 82. The oil window unit 5 is detachably installed on the outer port of the observation through-hole 203, realizing visualization of lubrication conditions and convenient cleaning. A flange ring 83 coaxial with the circular return hole 82 is set on the outer side of the C-shaped inner liner plate 8. The oil window unit 5 includes a pressure cover 51, a transparent oil window plate 52, a cup-shaped scraper 53, and a magnetic column 54. The flange ring 83 is clamped and assembled between the pressure cover 51 and the observation through-hole 203 to achieve sealed positioning installation. The transparent oil window plate 52 is encapsulated in the center of the pressure cover 51. The magnetic column 54 is fixed inside the transparent oil window plate 52. The end of the magnetic column 54 extends into the inside of the conical filter screen 92 and fixes the cup-shaped scraper 53. The cup-shaped scraper 53 is precisely matched with the edge of the C-shaped collection port 93.

[0029] During normal and continuous operation of the equipment, staff can observe the clarity of the oil inside the circular reflux hole 82, the amount of impurities accumulated on the magnetic column 54, and the working status of the conical filter screen 92 in real time and intuitively through the transparent oil window 52. This allows for accurate assessment of internal lubrication and filtration conditions without disassembling the machine, enabling proactive fault prediction. Simultaneously, the magnetic column 54 continuously adsorbs fine metal powders that are difficult to filter from the oil, preventing long-term wear of precision components by fine iron filings. During the high-speed rotation of the conical filter screen 92, the relatively stationary bowl-shaped scraper 53 continuously scrapes away the sludge and impurities accumulated at the C-shaped collection port edge 93, preventing filter clogging and achieving dynamic self-cleaning of the filtration structure.

[0030] It should be noted that the C-shaped collection port 93 is made of rubber. When the operator observes that the internal oil is turbid and there is excessive accumulation of impurities through the oil window unit 5, the pressure cover 51 of the oil window unit 5 can be removed directly to take out the magnetic column 54 and the cup-shaped scraper 53. During the removal process, the cup-shaped scraper 53 can scrape off the impurities accumulated inside the C-shaped collection port 93, thereby directly cleaning the lumpy impurities and sludge collected inside the C-shaped collection port 93. At the same time, the fine metal powder adsorbed on the surface of the magnetic column 54 can be wiped away, completing the entire cleaning operation. After cleaning, the oil window unit 5 can be reset and the machine can be started normally. The entire process does not require disassembly of the transmission structure, oil circuit structure, and heat dissipation structure. The maintenance operation is simple, the downtime is short, and it completely solves the drawbacks of traditional oscillating heads where internal impurities cannot be observed, cannot be easily cleaned, and can only be maintained by disassembling the entire machine.

[0031] A heat dissipation unit 4 is provided on the outside of the stator housing 2 to quickly dissipate working heat and suppress thermal deformation. The heat dissipation unit 4 includes an outer C-shaped heat dissipation fin 41, an inner C-shaped heat-conducting plate 42, and a heat-conducting ring 43. The outer C-shaped heat dissipation fin 41 is fixed to the outside of the stator housing 2. A coaxially arranged heat-conducting ring 43 is fixed in the middle of the outer C-shaped heat dissipation fin 41. The heat-conducting ring 43 is sleeved on the outside of the flange ring 83, and the heat-conducting ring 43 and the flange ring 83 are stacked and clamped between the pressure cover 51 and the observation through hole 203. The inner side of the heat-conducting ring 43 extends into the rotor compartment 202 and fixes the inner C-shaped heat-conducting plate 42. The inner C-shaped heat-conducting plate 42 is tightly attached to the outer arc of the C-shaped inner liner plate 8, which can absorb the concentrated heat generated by oil circulation and transmission friction in all directions. The heat is quickly conducted to the outer C-shaped heat dissipation fin 41 through the heat-conducting ring 43, and efficient heat dissipation is achieved through large-area air convection. Meanwhile, a heat insulation plate 85 is provided on the inner circumference of the C-shaped inner liner plate 8. The heat insulation plate 85 can separate the temperature of the oil in the internal cavity of the rotor chamber 202 from the oil in the internal supply channel 84 of the C-shaped inner liner plate 8, forming an internal and external temperature difference zone. The oil in the rotor chamber 202 that generates high temperature due to transmission friction will converge to the circular return hole 82 and flow into the internal supply channel 84. During the flow of the high temperature oil in the supply channel 84, it can be cooled by heat exchange through the heat dissipation unit 4 attached to the outside. The cooled clean oil is then delivered to the meshing area of ​​the worm gear 71 and the cylindrical roller 61 through the output hole 841 to complete the lubrication operation. At the same time, the heat insulation plate 85 can effectively block the temperature fluctuation and residual high temperature during the heat exchange process from being conducted to the internal precision transmission components, avoiding thermal deformation of the precision components.

[0032] The core of this invention is to construct a self-driven closed-loop lubrication circuit through the symmetrical tangential liquid supply channel 84 inside the C-shaped inner liner plate 8, and to achieve forced lubrication of the transmission pair by relying on the active pump blade 72. The passive centrifugal unit 9 driven by the tangential oil flow achieves dynamic centrifugal separation and fixed-point collection of impurities. At the same time, the removable oil window unit 5 enables real-time visualization of lubrication conditions and quick cleaning without disassembly, making it suitable for high-precision long-term continuous processing conditions.

[0033] The above description is only the best implementation method adopted in this application in combination with current actual needs, but the scope of protection of this application is not limited thereto.

Claims

1. A 360-degree indexing swing head, characterized in that, include: The stator housing (2) is provided with a rotor compartment (202) and a reduction compartment (201). The driven rotor shaft tube (6) is rotatably connected to the rotor housing (202) through a bearing structure. Several cylindrical rollers (61) are rotatably connected at equal angles on the circumferential side of the driven rotor shaft tube (6). The axis of the cylindrical rollers (61) intersects with and is perpendicular to the axis of the driven rotor shaft tube (6). The swing head ring seat (3) is installed at the end of the driven rotor shaft tube (6); C-shaped inner liner (8) is installed inside the rotor compartment (202). The two ends of the C-shaped inner liner (8) are symmetrically provided with annular pump compartment covers (81). The inner wall of the C-shaped inner liner (8) is provided with a circular reflux hole (82). The C-shaped inner liner (8) is provided with two sets of symmetrical liquid supply channels (84). The annular pump compartment cover (81) and the circular reflux hole (82) are connected through the liquid supply channels (84). The passive centrifugal unit (9) is rotatably connected to the circular reflux hole (82) and is used to separate impurities in the oil. The worm drive shaft (7) is rotatably connected to the rotor housing (202). The worm drive shaft (7) is provided with a worm part (71) that meshes with the cylindrical roller (61). The two ends of the worm drive shaft (7) are also symmetrically provided with active pump blades (72). The active pump blades (72) are provided in the corresponding annular pump housing cover (81). The active pump blades (72) are used to follow the rotation of the worm drive shaft (7) and push the oil in the annular pump housing cover (81) to the meshing point of the worm part (71) and the cylindrical roller (61) by negative pressure oil suction and pressurization. The drive unit (1) is installed at the reduction gearbox (201) and is used to drive the worm gear transmission shaft (7).

2. The 360-degree indexing swing head according to claim 1, characterized in that, The bearing structure includes an upper bearing cover (21) and a lower bearing cover (22) symmetrically installed on the upper and lower sides of the stator housing (2). An upper bearing component (212) is installed between the upper bearing cover (21) and the top of the driven rotor shaft tube (6). An upper sealing ring (211) is clamped between the upper bearing component (212) and the upper bearing cover (21). A lower bearing component (222) is installed between the lower bearing cover (22) and the bottom of the driven rotor shaft tube (6). A lower sealing ring (221) is clamped between the lower bearing cover (22) and the lower bearing component (222).

3. A 360-degree indexing swing head according to claim 1, characterized in that, The drive unit (1) includes a servo motor (11), and a motor connecting plate (12) is encapsulated on the open side of the reduction chamber (201). The output end of the servo motor (11) passes through the motor connecting plate (12) and extends into the reduction chamber (201). One end of the worm gear drive shaft (7) passes through the rotor chamber (202) and extends into the reduction chamber (201). A reduction gear set (13) is provided between the output end of the servo motor (11) and the end of the worm gear drive shaft (7).

4. A 360-degree indexing swing head according to claim 1, characterized in that, The end face of the active pump blade (72) is provided with several L-shaped centrifugal channels (722) evenly distributed at equal angles. The input end of the L-shaped centrifugal channel (722) is located inside the annular pump chamber cover (81) and is provided with a V-shaped liquid pushing groove (721). The output end of the L-shaped centrifugal channel (722) extends to the outside of the annular pump chamber cover (81) and is located on one side of the worm gear (71). The active pump blade (72) is provided with a spline groove (723), and the active pump blade (72) is sleeved on the end of the worm gear drive shaft (7) through the spline groove (723).

5. A 360-degree indexing swing head according to claim 4, characterized in that, The output end of the liquid supply channel (84) is provided with an output hole (841), which is located inside the annular pump compartment cover (81). The input end of the liquid supply channel (84) is provided with a C-type input hole (842), which is connected to the circular return hole (82). The C-type input holes (842) on the two sets of liquid supply channels (84) are arranged in a rotationally symmetrical manner, and the liquid inlet direction of the C-type input hole (842) is tangent to the circumferential direction of the circular return hole (82).

6. A 360-degree indexing swing head according to claim 5, characterized in that, The passive centrifuge unit (9) includes a passive centrifuge blade (91) rotatably connected to the port of the circular reflux hole (82). One end of the passive centrifuge blade (91) extends into the circular reflux hole (82) and is fixed with a conical filter screen (92). A C-shaped collection port edge (93) is fixed on the side of the conical filter screen (92) away from the passive centrifuge blade (91).

7. A 360-degree indexing swing head according to claim 6, characterized in that, The stator housing (2) is provided with an observation through hole (203) coaxial with the circular return hole (82), and an oil window unit (5) is detachably installed on the outer port of the observation through hole (203). The outer side of the C-shaped inner liner (8) is provided with a flange ring (83) coaxial with the circular reflux hole (82). The oil window unit (5) includes a cover (51). The flange ring (83) is sandwiched between the cover (51) and the observation through hole (203). A transparent oil window plate (52) is sealed on the cover (51). A magnetic column (54) is fixed on the inner side of the transparent oil window plate (52). The end of the magnetic column (54) away from the transparent oil window plate (52) extends into the conical filter screen (92) and is fixed with a bowl-shaped scraper (53) that matches the edge of the C-shaped collection port (93).

8. A 360-degree indexing swing head according to claim 7, characterized in that, The stator housing (2) is also provided with a heat dissipation unit (4). The heat dissipation unit (4) includes an outer C-shaped heat dissipation fin (41) that is attached to the outside of the stator housing (2). A heat-conducting ring sleeve (43) that is coaxially provided with the flange ring (83) is fixed in the middle of the outer C-shaped heat dissipation fin (41). The heat-conducting ring sleeve (43) is sleeved on the outside of the flange ring (83). The end of the heat-conducting ring sleeve (43) that is away from the outer C-shaped heat dissipation fin (41) extends to the rotor compartment (202) and is fixed with an inner C-shaped heat-conducting plate (42). The inner C-shaped heat-conducting plate (42) is attached to the outer arc of the C-shaped inner liner plate (8). The heat-conducting ring sleeve (43) is stacked on the outside of the flange ring (83) and together clamped between the gland (51) and the observation hole (203).

9. A 360-degree indexing swing head according to claim 8, characterized in that, The inner circumference of the C-shaped inner lining plate (8) is provided with a heat insulation plate (85).

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