Gear milling equipment for outer rotor of lubricating oil pump

Abstract

The utility model relates to gear milling equipment for an outer rotor of a lubricating oil pump, which is mainly used for high-precision gear milling of the outer rotor of the lubricating oil pump. The equipment comprises an indexing rotating table and a supporting stand column, a horizontal mechanical sliding table is arranged at the bottom of the supporting stand column, and the horizontal mechanical sliding table and the indexing rotating table are arranged in a matched mode. Two symmetrically-distributed gear manufacturing tools are arranged above the indexing rotary workbench and used for fixing a gear to be machined. A vertical mechanical sliding table is arranged above the supporting stand column, a gear milling supporting frame is arranged on the outer side of the vertical mechanical sliding table, and a milling head is installed on the gear milling supporting frame. The indexing rotating table can drive the planetary reducer through the servo motor to achieve accurate indexing. The gear manufacturing tool comprises an upper positioning block, a matching groove and a correction hole and is used for accurately positioning and fixing a gear. The equipment has the characteristics of high automation degree, high machining precision and high stability, and is suitable for machining the outer rotors of the lubricating oil pumps on a large scale.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, and in particular to a milling equipment for the external rotor of a lubricating oil pump. Background Technology

[0002] For the external rotor gear of a cycloidal gear pump, the commonly used material internationally and domestically is powder metallurgy, and the gear tooth profile is machined using high-pressure die casting. This ensures the accuracy requirements of the internal rotor gear's profile. Due to the flow and pressure requirements of gear pumps, the accuracy requirements for the main components, the internal and external rotors, are very high, and their profile machining is particularly critical. Therefore, to ensure these accuracy requirements, the commonly used machining method internationally and domestically is high-pressure die casting. However, the material currently used for high-pressure die casting is powder metallurgy. Because powder metallurgy has poor toughness, it is prone to fracture and damage, leading to the failure of the lubricating oil pump assembly. Utility Model Content

[0003] This utility model addresses the problems existing in the prior art by providing a milling machine for the outer rotor of a lubricating oil pump. By using a milling machine to process the outer rotor, the overall toughness of the outer rotor is improved, thereby increasing the service life of the lubricating oil pump assembly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A milling machine for an external rotor of a lubricating oil pump includes an indexing rotary table and a support column. A horizontal mechanical slide is fitted at the bottom of the support column, and the side of the horizontal mechanical slide is fitted with the indexing rotary table, which is located inside the support column. Two symmetrically distributed gear-making fixtures are fitted above the indexing rotary table for positioning and fixing the gears to be processed. A vertical mechanical slide is fitted above the support column, and a gear-milling support frame is fitted on the outer side of the vertical mechanical slide. A milling head is fitted above the gear-milling support frame.

[0006] Preferably, the indexing rotary table includes a table facet, a table support, a rotary bearing, an output gear, a reducer support, a planetary reducer, and a servo motor. The table facet is engaged on the inner side of the indexing rotary table. The table support is mounted on the table facet. The rotary bearing and the output gear are mounted on the outer side of the table support, and the output gear meshes with the rotary bearing. The reducer support is mounted below the output gear. The planetary reducer and the servo motor are mounted on the reducer support. The output end of the servo motor engages with the planetary reducer, and the output end of the planetary reducer is coaxially aligned with the center of the output gear.

[0007] Preferably, a shim is provided between the rotary bearing and the worktable disc for positional fit.

[0008] Preferably, the tooth-making fixture includes an upper positioning block, a mating groove, and a correction hole. The upper positioning block is symmetrically positioned on the upper and lower parts of the tooth-making fixture. Two symmetrically distributed mating grooves are provided at the center of the upper positioning block, and a correction hole is provided at the center of the tooth-making fixture.

[0009] Preferably, the planetary reducer is model PX190.

[0010] Compared with the prior art, this utility model provides a milling equipment for the external rotor of a lubricating oil pump, which has the following beneficial effects:

[0011] 1. This equipment uses a gear milling machine to mill the outer rotor. Compared with the traditional high-pressure forming and die-casting processing method, it can greatly improve the processing toughness of the outer rotor body, thereby further improving the service life of the assembled lubricating oil pump assembly.

[0012] 2. This gear milling equipment adopts an indexing rotary table and a gear-making fixture with machining limit components, which effectively improves the overall accuracy of the external rotor gear milling process. At the same time, it can also change the relevant parameters of gear milling according to the actual machining situation, which effectively improves the adaptability of the equipment. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the component structure of the indexing rotary table in a specific embodiment of this utility model;

[0015] Figure 3 This is a partial enlarged view of point A in this utility model;

[0016] Figure 4 This is a schematic diagram of the component structure of the tooth-making tool in a specific embodiment of this utility model.

[0017] In the diagram: 1. Indexing rotary table; 2. Gear-making fixture; 3. Milling head; 4. Support column; 5. Gear milling support frame; 6. Vertical mechanical slide; 7. Horizontal mechanical slide; 101. Table faceplate; 102. Table support; 103. Rotary bearing; 104. Raising block; 105. Output gear; 106. Reducer support; 107. Planetary reducer; 108. Servo motor; 201. Upper positioning block; 202. Mating groove; 203. Correction hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship 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.

[0020] Example 1:

[0021] Reference Figure 1-4 A milling machine for an external rotor of a lubricating oil pump includes an indexing rotary table 1 and a support column 4. A horizontal mechanical slide 7 is fitted at the bottom of the support column 4. The side of the horizontal mechanical slide 7 is fitted with the indexing rotary table 1, and the indexing rotary table 1 is located inside the support column 4. Two symmetrically distributed gear-making fixtures 2 are fitted above the indexing rotary table 1. The gear-making fixtures 2 are used to position and fix the gears to be processed. A vertical mechanical slide 6 is fitted above the support column 4. A gear-milling support frame 5 is fitted on the outer side of the vertical mechanical slide 6. A milling head 3 is fitted above the gear-milling support frame 5.

[0022] The milling head 3 used inside this equipment is of high precision and is used for planar milling, grooving, and flat milling of steel, cast iron, and non-ferrous metal parts. In actual use, it can perform large feed rate and heavy-duty milling according to the processing requirements of the outer rotor. At the same time, the high-precision milling head is used for efficient and high-precision milling, with a maximum feed rate of up to 2500 mm / min, thereby improving the overall work efficiency.

[0023] Furthermore, the indexing rotary table 1 includes a table disc 101, a table support 102, a rotary bearing 103, an output gear 105, a reducer support 106, a planetary reducer 107, and a servo motor 108. The table disc 101 is engaged on the inner side of the indexing rotary table 1. The table support 102 is mounted on the table disc 101. The rotary bearing 103 and the output gear 105 are mounted on the outer side of the table support 102, and the output gear 105 meshes with the rotary bearing 103. The reducer support 106 is mounted below the output gear 105. The planetary reducer 107 and the servo motor 108 are mounted on the reducer support 106. The output end of the servo motor 108 engages with the planetary reducer 107, and the output end of the planetary reducer 107 is coaxially aligned with the center of the output gear 105.

[0024] Furthermore, the planetary reducer 107 is model PX190. This model of planetary reducer features high precision, high torque, and low noise, ensuring the smooth operation and accurate indexing of the indexing rotary table 1.

[0025] Furthermore, a shim 104 is provided between the rotary bearing 103 and the worktable disc 101 for positional engagement. The shim 104 is used to adjust the gap between the rotary bearing 103 and the worktable disc 101, ensuring that the rotary bearing 103 can operate smoothly, while improving the stability of the worktable disc 101.

[0026] In actual operation, the outer rotor to be processed is first placed in the mating groove 202 of the gear-making fixture 2 and precisely positioned through the correction hole 203. Then, the servo motor 108 is started, driving the output gear 105 through the planetary reducer 107, so that the indexing rotary table 1 performs precise indexing. The milling head 3, with the cooperation of the vertical mechanical slide 6 and the horizontal mechanical slide 7, performs gear milling on the outer rotor. The entire processing is highly automated and has high processing accuracy, making it suitable for mass production.

[0027] Example 2:

[0028] Reference Figure 1-4 Similar to Embodiment 1, but further, the gear-making fixture 2 includes an upper positioning block 201, a mating groove 202, and a correction hole 203. The upper positioning block 201 is symmetrically positioned on the upper and lower parts of the gear-making fixture 2. Two symmetrically distributed mating grooves 202 are located at the center of the upper positioning block 201 for fixing the gear to be processed. The correction hole 203 is located at the center of the gear-making fixture 2 for precise positioning and correction during installation.

[0029] 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. A gear milling apparatus for an external rotor lubricating oil pump, characterized by, The application relates to a gear tooth machining device, which comprises a dividing rotary table (1) and a supporting column (4), the bottom of the supporting column (4) is provided with a horizontal mechanical sliding table (7), the horizontal mechanical sliding table (7) is provided on the side of the dividing rotary table (1), the dividing rotary table (1) is arranged on the inner side of the supporting column (4), two symmetrical tooth machining tools (2) are arranged on the top of the dividing rotary table (1), the tooth machining tools (2) are used for positioning and fixing a gear to be machined, a vertical mechanical sliding table (6) is arranged on the top of the supporting column (4), a gear milling support frame (5) is arranged on the outer side of the vertical mechanical sliding table (6), and a milling head (3) is arranged on the top of the gear milling support frame (5).

2. A gear milling apparatus for an external rotor lubricating oil pump according to claim 1, characterized by The dividing rotary table (1) comprises a table chuck (101), a table support (102), a rotary bearing (103), an output gear (105), a speed reducer support (106), a planetary speed reducer (107) and a servo motor (108), the table chuck (101) is clamped on the inner side of the dividing rotary table (1), the table chuck (101) is provided with the table support (102), the table support (102) is provided with the rotary bearing (103) and the output gear (105) on the outer side, the output gear (105) is engaged with the rotary bearing (103), the output gear (105) is provided with the speed reducer support (106) on the lower side, the speed reducer support (106) is provided with the planetary speed reducer (107) and the servo motor (108), the output end of the servo motor (108) is connected with the planetary speed reducer (107), and the output end of the planetary speed reducer (107) is coaxially arranged with the center of the output gear (105).

3. A gear milling apparatus for an external rotor lubricating oil pump according to claim 2, characterized in that, The rotary bearing (103) and the table chuck (101) are provided with a heightening block (104) on the position.

4. A gear milling apparatus for an external rotor lubricating oil pump according to claim 1, characterized by The tooth machining tool (2) comprises an upper positioning block (201), a matching groove (202) and a correction hole (203), the upper positioning block (201) is arranged on the upper and lower symmetrical positions of the tooth machining tool (2), the upper positioning block (201) is provided with two symmetrical matching grooves (202) on the center position, and the tooth machining tool (2) is provided with the correction hole (203) on the center position.

5. A gear milling apparatus for an external rotor lubricating oil pump according to claim 2, characterized by The model of the planetary speed reducer (107) is PX190.

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