Oil path distributor for five-axis machine tool

Abstract

The utility model discloses an oil path distributor for a five-axis machine tool, which comprises a rotating shaft, a plurality of annular first oil inlet grooves and annular first sealing grooves are arranged on the outer side wall of the upper end of the rotating shaft at intervals, a plurality of oil inlet holes are arranged at the bottom of the rotating shaft along the circumferential direction at intervals, and the bottom of the rotating shaft is connected with a lower sealing cover; the oil separation barrel is rotationally arranged on the outer wall of the rotating shaft in a sleeving mode, a plurality of annular second oil inlet grooves and annular second sealing grooves are formed in the outer side wall of the lower end of the oil separation barrel at intervals, and a first top oil hole communicating with the first side face hole is formed in the top of the oil separation barrel; a second top oil hole communicated with the second oil inlet groove is formed in the top of the oil separation barrel; and the outer sleeve is fixedly arranged on the upper side of the lower sealing cover. The oil way distributor can solve the problems that an existing oil way distributor can only conduct four-way or six-way oil way distribution, the occupied space is large, and follow-up maintenance is troublesome.

Description

Technical Field

[0001] The utility model relates to the technical field of oil circuit distributors, in particular to an oil circuit distributor for a five-axis machine tool. Background Art

[0002] With the development of the machinery manufacturing industry, five-axis machine tools are increasingly used in machining large and complex parts. However, in the process of automated machining, existing tooling usually contains 8-12 oil circuits, but conventional oil circuit distributors can usually only perform 4-way or 6-way oil circuit distribution, which cannot meet the needs of existing tooling. At the same time, the installation and subsequent maintenance of existing oil circuit distributors are relatively cumbersome, which increases the difficulty and cost of operation and affects the machining accuracy and efficiency of machine tools. Utility Model Content

[0003] The utility model provides an oil circuit distributor for a five-axis machine tool, which can solve the problem that the existing oil circuit distributor can only perform 4-way or 6-way oil circuit distribution, occupies a large space, and has troublesome subsequent maintenance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil circuit distributor for a five-axis machine tool, comprising a rotating shaft, a plurality of annular first oil inlet grooves and annular first sealing grooves are arranged at intervals on the outer side wall of the upper end of the rotating shaft, the first oil inlet groove is located between two adjacent first sealing grooves, a plurality of oil inlet holes are arranged at intervals along the circumferential direction at the bottom of the rotating shaft, the oil inlet holes correspond to the first oil inlet grooves and are connected, a lower cover is connected to the bottom of the rotating shaft, and a first oil circuit channel corresponding to and connected to the oil inlet holes is arranged on the side of the lower cover; an oil separator, which is rotatably sleeved on the outer wall of the rotating shaft, a plurality of annular second oil inlet grooves and annular second sealing grooves are arranged at intervals on the outer side wall of the lower end of the oil separator, a first side hole corresponding to and connected to the first oil inlet groove is opened on the side wall of the oil separator, and a first side hole corresponding to and connected to the first side hole is arranged on the top of the oil separator The top of the oil separator is provided with a second top oil hole connected with the second oil inlet groove; an outer sleeve, which is fixedly arranged on the upper side of the lower cover, and the outer sleeve is rotatably connected with the oil separator, and the outer sleeve comprises a flange and a rotating sleeve, and a second side hole corresponding to and connected to a plurality of the second oil inlet grooves is opened on the side wall of the rotating sleeve, and a second oil circuit channel connected with the second side hole is provided on the side of the flange, and the second oil circuit channel and the first oil circuit channel are located on the same side; an installing cover plate, which is arranged on the upper side of the oil separator, and the installing cover plate is provided with oil port joint grooves respectively connected with the first top oil hole and the second top oil hole, and a plurality of the oil port joint grooves are distributed in a circular array, with a simple structure and small space occupation, so that the oil circuit distributor can be easily installed inside the machine platform, and the oil circuit is evenly distributed, thereby improving the machining accuracy and efficiency of the machine tool.

[0005] Preferably, first deep groove ball bearings are sleeved on the outer walls of the upper and lower ends of the rotating shaft, the first deep groove ball bearings are located in the oil separation cylinder, and the rotating shaft and the oil separation cylinder are rotationally connected via the first deep groove ball bearings.

[0006] Preferably, second deep groove ball bearings are provided inside the upper and lower ends of the outer sleeve and on the outer wall of the oil separator, and the outer sleeve and the oil separator are rotationally connected via the second deep groove ball bearings.

[0007] Preferably, a skeleton oil seal is provided inside the upper end of the outer sleeve, located on the upper side of the second deep groove ball bearing, to prevent external cutting fluid, aluminum chips, etc. from invading the distributor and causing damage.

[0008] Preferably, an upper cover plate is fixedly connected to the upper side of the rotating shaft for fixing the first deep groove ball bearing.

[0009] Preferably, a lower cover plate is fixedly connected to the lower side of the oil separator cylinder for fixing the first deep groove ball bearing and the second deep groove ball bearing.

[0010] Preferably, sealing rings are installed in the first sealing groove and the second sealing groove, and the sealing performance is good.

[0011] Preferably, the number of the first oil inlet grooves is 6, forming 6 internal oil circuits.

[0012] Preferably, the number of the second oil inlet grooves is 6, forming 6 external oil circuits.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The structure is simple, easy to process and install, and it can meet the needs of tooling for multiple oil circuits when processing large and complex parts. It has good sealing performance, and the 12 oil circuit oil port joints are in the same direction, which is convenient for installation. At the same time, it uses internal and external oil circuits for distribution, which reduces the volume of the oil circuit distributor and facilitates the installation of the oil circuit distributor inside the machine. It is convenient for installation and subsequent maintenance, and reduces the difficulty and cost of operation. It can solve the problem that the existing oil circuit distributor can only perform 4-way or 6-way oil circuit distribution, occupies a large space, and is troublesome for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 is along Figure 2 Sectional view along line AA;

[0018] Figure 4 is along Figure 2 Sectional view along the midline BB;

[0019] Figure 5 It is a top view of the oil separator of the utility model;

[0020] Figure 6 is along Figure 5 Sectional view of the mid-GG line;

[0021] Figure 7 is along Figure 5 Sectional view along line FF;

[0022] Figure 8 It is a cross-sectional view of the rotating shaft of the utility model;

[0023] Fig. 9 It is a three-dimensional structural diagram of the outer sleeve of the utility model;

[0024] Fig.10 This is a schematic diagram of the first internal oil passage of the lower cover of the utility model;

[0025] Fig.11 It is a three-dimensional structural diagram of the lower cover plate of the utility model.

[0026] Reference numerals:

[0027] 1. rotating shaft, 2. lower cover, 3. oil distributor, 4. mounting cover, 5. outer sleeve, 6. sealing ring, 7. first deep groove ball bearing, 8. second deep groove ball bearing, 9. skeleton oil seal, 10. upper cover, 11. first oil inlet groove, 12. first sealing groove, 13. oil inlet hole, 21. first oil passage, 31. second oil inlet groove, 32. second sealing groove, 33. first side hole, 34. first top oil hole, 35. second top oil hole, 41. oil port joint groove, 51. flange, 52. rotating sleeve, 511. second oil passage, 521. second side hole, 20. lower cover. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] like Figure 1-11As shown, the utility model provides the following technical solutions to solve the problems that the existing oil circuit distributor can only perform 4-way or 6-way oil circuit distribution, occupy a large space, and the subsequent maintenance is relatively troublesome: an oil circuit distributor for a five-axis machine tool, comprising a rotating shaft 1, and the outer side wall of the upper end of the rotating shaft 1 is provided with 6 annular first oil inlet grooves 11 and 7 annular first sealing grooves 12 at intervals, the first oil inlet groove 11 is located between two adjacent first sealing grooves 12, and 6 independent channels are formed by arranging a sealing ring 6, and the bottom of the rotating shaft 1 is provided with a plurality of oil inlet holes 13 at intervals along the circumferential direction, and the oil inlet holes 13 extend upward and correspond to the first oil inlet grooves 11 one by one and are connected The bottom of the rotating shaft 1 is connected to a lower cover 2, and a first oil passage 21 corresponding to and connected to the oil inlet hole 13 is provided on the side of the lower cover 2; an oil separator 3 is rotatably sleeved on the outer wall of the rotating shaft 1, and a plurality of annular second oil inlet grooves 31 and annular second sealing grooves 32 are arranged at intervals on the outer side wall of the lower end of the oil separator 3, and six independent channels are formed by arranging a sealing ring 6 in the second sealing groove 32, and a first side hole 33 corresponding to and connected to the first oil inlet groove 11 is opened on the side wall of the oil separator 3, and a first top oil hole 34 connected to the first side hole 33 is provided on the top of the oil separator 3, and the oil separator 3 is provided with a second top oil hole 35 connected to the second oil inlet groove 31; an outer sleeve 5, which is fixedly arranged on the upper side of the lower cover 2, and the outer sleeve 5 is rotatably connected to the oil distributor 3, and the outer sleeve 5 includes a flange 51 and a rotating sleeve 52, and the side wall of the rotating sleeve 52 is provided with second side holes 521 corresponding to and connected to a plurality of second oil inlet grooves 31, and the side of the flange 51 is provided with a second oil passage 511 connected to the second side holes 521, and the second oil passage 511 and the first oil passage 21 are located on the same side, concentrated on the lower side of the oil distributor, and 12 oil passage oil port joints are provided. The directions are consistent to ensure the convenience of installation of external hydraulic oil pipes, and oil circuit identification signs are made to facilitate the connection and installation of external oil pipes, the wiring arrangement and the later maintenance and inspection; the installation cover plate 4 is arranged on the upper side of the oil distribution cylinder 3, and the installation cover plate 4 is provided with oil port joint grooves 41 respectively connected with the first top oil hole 34 and the second top oil hole 35, and several of the oil port joint grooves 41 are distributed in a circular array. Oil port joints are installed in the oil port joint grooves 41 to realize the flow direction control of the hydraulic oil of the machine tool and the tooling. The oil port joint is equivalent to a normally closed switch. When oil needs to be passed, the oil pressure is used to push the center of the oil port joint open to realize oil passage, so as to avoid hydraulic oil overflow, waste and cleaning problems.

[0030] In this embodiment, if Figure 4As shown, first deep groove ball bearings 7 are sleeved on the outer walls of the upper and lower ends of the rotating shaft 1 , and the first deep groove ball bearings 7 are located in the oil separation cylinder 3 . The rotating shaft 1 and the oil separation cylinder 3 are rotationally connected via the first deep groove ball bearings 7 .

[0031] In this embodiment, if Figure 4 As shown, second deep groove ball bearings 8 are provided inside the upper and lower ends of the outer sleeve 5 and on the outer wall of the oil separator 3 , and the outer sleeve 5 and the oil separator 3 are rotatably connected via the second deep groove ball bearings 8 .

[0032] In this embodiment, if Figure 4 As shown, a skeleton oil seal 9 is provided inside the upper end of the outer sleeve 5 and located on the upper side of the second deep groove ball bearing 8 to prevent external cutting fluid, aluminum chips, etc. from invading the distributor and causing damage.

[0033] In this embodiment, if Figure 4 As shown, an upper cover plate 10 is connected to the upper side of the rotating shaft 1 by bolts, and the upper cover plate 10 is pressed on the inner ring of the first deep groove ball bearing 7 .

[0034] In this embodiment, if Figure 4 As shown, the lower side of the oil separator 3 is connected to a lower cover plate 20 by bolts, and a circle of protrusions 201 are arranged on the upper side of the lower cover plate 20 along the circumferential direction. The two sides of the protrusions 201 are respectively pressed on the outer ring of the first deep groove ball bearing 7 and the inner ring of the second deep groove ball bearing 8, so as to keep the Z-direction height unchanged, improve the structural stability and make the processing and installation more convenient.

[0035] In this embodiment, if Figure 3-4 As shown, during installation, the sealing ring 6 is installed in the first sealing groove 12 and the second sealing groove 32, the oil separator 3 is sleeved on the rotating shaft 1, the first deep groove ball bearing 7 is installed, the upper cover plate 10 is fixed to the upper side of the rotating shaft 1 by bolts, and two second deep groove ball bearings 8 are installed on the outer wall of the oil separator, the lower cover plate 20 is fixed to the bottom of the oil separator 3 by bolts, the outer sleeve is installed on the outside of the lower end of the oil separator 3, and the skeleton oil seal 9 is continuously installed into the upper end of the outer sleeve, and the lower cover is fixed to the bottom of the rotating shaft 1 by bolts.

[0036] In this embodiment, if Figure 1As shown, the sides of the first oil channel 21 and the second oil channel 511 are both connected with oil pipes, and the oil port joint is installed in the oil port joint groove 41. When the hydraulic oil enters the first oil channel 21 from the oil pipe, it continues to flow through the oil inlet hole 13, passes through the first oil inlet groove 11 and the first side hole 33 and enters the first top oil hole 34, and the center of the oil port joint is pushed open by oil pressure to realize oil flow in the inner oil circuit; when the hydraulic oil enters the second oil channel 511 from the oil pipe, it flows through the second side hole 521 and enters the second oil inlet groove 31, and continues to enter the second top oil hole 35, and the center of the oil port joint is pushed open by oil pressure to realize oil flow in the outer oil circuit. There are 6 inner oil circuits and 6 outer oil circuits, which reduces the diameter of the oil circuit distributor. The diameter of the oil circuit distributor depends on the inner diameter of the turntable bearing and the encoder inside the machine, which is convenient for installing the oil circuit distributor inside the machine, saving the machine installation space and expanding the use range of the oil circuit distributor.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An oil distributor for a five-axis machine tool, characterized in that: include: A rotating shaft (1), wherein a plurality of annular first oil inlet grooves (11) and annular first sealing grooves (12) are arranged at intervals on the outer side wall of the upper end of the rotating shaft (1), wherein the first oil inlet groove (11) is located between two adjacent first sealing grooves (12), and a plurality of oil inlet holes (13) are arranged at intervals along the circumferential direction at the bottom of the rotating shaft (1), wherein the oil inlet holes (13) correspond to the first oil inlet grooves (11) one by one and are arranged in communication with each other, and the bottom of the rotating shaft (1) is connected to a lower cover (2), and a first oil passage (21) corresponding to and in communication with the oil inlet holes (13) is arranged on the side of the lower cover (2); An oil separator (3) is rotatably sleeved on the outer wall of the rotating shaft (1); a plurality of annular second oil inlet grooves (31) and annular second sealing grooves (32) are arranged at intervals on the outer wall of the lower end of the oil separator (3); a first side hole (33) corresponding to and connected to the first oil inlet groove (11) is opened on the side wall of the oil separator (3); a first top oil hole (34) connected to the first side hole (33) is arranged on the top of the oil separator (3); and a second top oil hole (35) connected to the second oil inlet groove (31) is arranged on the top of the oil separator (3); An outer sleeve (5) is fixedly arranged on the upper side of the lower cover (2), the outer sleeve (5) is rotatably connected to the oil distribution cylinder (3), the outer sleeve (5) comprises a flange (51) and a rotating sleeve (52), a side wall of the rotating sleeve (52) is provided with second side holes (521) corresponding to and connected to a plurality of the second oil inlet grooves (31), a side portion of the flange (51) is provided with a second oil passage (511) connected to the second side holes (521), and the second oil passage (511) and the first oil passage (21) are located on the same side; A mounting cover plate (4) is arranged on the upper side of the oil distribution cylinder (3), and the mounting cover plate (4) is provided with oil port joint grooves (41) respectively connected to the first top oil hole (34) and the second top oil hole (35), and a plurality of the oil port joint grooves (41) are distributed in a circular array.

2. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: First deep groove ball bearings (7) are sleeved on the outer walls of the upper and lower ends of the rotating shaft (1), and the first deep groove ball bearings (7) are located in the oil separation cylinder (3).

3. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: Second deep groove ball bearings (8) are arranged inside the upper and lower ends of the outer sleeve (5) and on the outer wall of the oil separation cylinder (3).

4. The oil distributor for a five-axis machine tool according to claim 3 is characterized in that: A skeleton oil seal (9) is provided inside the upper end of the outer sleeve (5) and located on the upper side of the second deep groove ball bearing (8).

5. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: An upper cover plate (10) is fixedly connected to the upper side of the rotating shaft (1).

6. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: A lower cover plate (20) is fixedly connected to the lower side of the oil separation cylinder (3).

7. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: Sealing rings (6) are installed in the first sealing groove (12) and the second sealing groove (32).

8. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: The number of the first oil inlet grooves (11) is 6.

9. The oil distributor for a five-axis machine tool according to claim 1, characterized in that: The number of the second oil inlet grooves (31) is 6.

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