A hydraulic rotary device suitable for multi-axis combined machine tools

Abstract

The utility model relates to a kind of hydraulic rotary devices suitable for multi-shaft combined machine tool, including shell and mandrel rotationally arranged in shell, oil inlet assembly is opened in shell, oil inlet assembly includes the oil circuit being set in mandrel, rotating shaft is set up on shell, oil pipe assembly is set up on rotating shaft, oil pipe assembly includes several oil pipes, oil pipe is communicated with oil circuit, sealing assembly is set up in the junction of oil pipe and oil circuit, the upper end of sealing assembly is provided with limiting component;In the utility model, sealing assembly is set in the junction of oil circuit and oil pipe, limiting component is set in the upper end of sealing assembly, by the movable column being clamped in tapered groove, oil pipe can be limited in oil circuit, to avoid oil pipe loosening after long-term use;By the extrusion of oil pipe pressing extrusion piston column, gas in air inlet pipe is extruded into air bag, so that air bag expands, and soft material can provide better sealing for rigid connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of lathe tooling technology, specifically a hydraulic rotary device suitable for multi-axis combination machine tools. Background Technology

[0002] Hydraulic rotary joints are a type of rotary joint specifically designed for low-speed, high-pressure equipment with multiple media and multiple channels. They are used in machining center rotary tables, hydraulic workstations, coilers, converters, ladle rotary tables, hydraulic machinery, and multi-channel high-pressure controllers.

[0003] A Chinese utility model patent with publication number CN217272643U discloses a hydraulic rotary joint for lathe use, including a pulley with an internal connecting pipe, a detachable flange at the spindle end of the pulley, a rotary joint bolted to the center of the flange surface, two detachable connecting pipe heads at the top of the rotary joint surface, an installation pipe at the bottom of the rotary joint surface, an oil drain pipe for oil discharge on the surface of the installation pipe, and a conduit for connecting a clamp that can pass through the center of the pulley.

[0004] However, the inventors discovered that the oil pipes and oil circuits on the device are connected in a conventional way. Under long-term use, gaps are easily formed between the oil circuit inside the rotary joint and the external oil pipes, resulting in oil leakage. Based on this, we propose a hydraulic rotary device suitable for multi-axis combination machine tools. Utility Model Content

[0005] To address the aforementioned technical problems, the present invention adopts the following technical solution:

[0006] A hydraulic rotary device suitable for multi-axis combination machine tools includes a housing and a spindle rotatably disposed within the housing. An oil inlet assembly is provided on the housing, and the oil inlet assembly includes an oil passage disposed within the spindle. A rotating shaft is disposed on the housing, and an oil pipe assembly is disposed on the rotating shaft. The oil pipe assembly includes a plurality of oil pipes, which are connected to the oil passage. A sealing assembly is provided at the connection between the oil pipes and the oil passage, and a limit component is provided at the upper end of the sealing assembly.

[0007] As a preferred embodiment, the oil inlet assembly further includes several annular oil passages disposed on the spindle and a first through hole disposed on the housing communicating with the annular oil passages.

[0008] As a preferred embodiment, the sealing assembly includes a plurality of second through holes formed on the rotating shaft, a first slot formed on the sidewall of the second through holes, an air bladder disposed at the connection between the oil pipe and the oil passage, an air inlet pipe disposed on the side of the air bladder, a piston cylinder disposed at the end of the air inlet pipe, a piston rod slidably disposed in the piston cylinder, and a tapered column disposed at the end of the piston rod.

[0009] As a preferred embodiment, the limiting assembly includes a tapered groove at the lower end of the oil pipe, a second slot formed on the side wall of the second through hole, a movable column slidably disposed in the second slot, a return spring disposed between the movable column and the second slot, and a guide column disposed in the middle of the return spring.

[0010] As a preferred embodiment, the upper and lower end faces of the movable column are inclined planes, and the angle formed by the inclined planes is 55°-65°.

[0011] As a preferred embodiment, the oil pipe assembly is divided into an oil inlet pipe, an oil outlet pipe, a return oil pipe, and an air pipe. The oil inlet pipe and the oil outlet pipe are a group, and the number of the return oil pipe and the air pipe is one each.

[0012] As another preferred embodiment, the upper end of the tubing assembly is provided with an oil circuit distributor, and the tubing assembly is provided with several fixing rings.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, a sealing component is provided at the connection between the oil circuit and the oil pipe, and a limiting component is provided at the upper end of the sealing component. The movable column is engaged in the conical groove, which can limit the oil pipe in the oil circuit and prevent the oil pipe from loosening after long-term use. The compression piston column pressed down by the oil pipe compresses the gas in the intake pipe into the air bladder, causing the air bladder to expand. The soft material can provide better sealing for rigid connecting parts.

[0015] In summary, this equipment has advantages such as good sealing performance and long service life, and is especially suitable for the field of lathe tooling technology. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the isometric structure of a hydraulic rotary device suitable for multi-axis combination machine tools;

[0018] Figure 2 This is a cross-sectional view of the oil inlet assembly.

[0019] Figure 3 This is a schematic cross-sectional view of the connection between the oil passage and the oil pipe.

[0020] Figure 4 for Figure 3Enlarged view of point A in the middle;

[0021] Figure 5 for Figure 3 Enlarged view at point B in the middle;

[0022] 1-Housing; 2-Mandrel; 3-Oil inlet assembly; 4-Rotating shaft; 5-Oil pipe assembly; 6-Sealing assembly; 7-Limiting assembly; 8-Oil circuit distributor; 31-Oil circuit; 32-Annular oil passage; 33-First through hole; 51-Oil pipe; 52-Fixing ring; 61-Second through hole; 62-First slot; 63-Airbag; 64-Air inlet pipe; 65-Piston cylinder; 66-Piston rod; 67-Conical column; 71-Conical groove; 72-Second slot; 73-Moving column; 74-Return spring; 75-Guide column. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a hydraulic rotary device suitable for multi-axis combination machine tools includes a housing 1 and a spindle 2 rotatably disposed within the housing 1. An oil inlet assembly 3 is provided on the housing 1, and the oil inlet assembly 3 includes an oil passage 31 disposed within the spindle 2. A rotating shaft 4 is provided on the housing 1, and an oil pipe assembly 5 is provided on the rotating shaft 4. The oil pipe assembly 5 includes a plurality of oil pipes 51, and the oil pipes 51 are connected to the oil passage 31. A sealing assembly 6 is provided at the connection between the oil pipes 51 and the oil passage 31, and a limit assembly 7 is provided at the upper end of the sealing assembly 6.

[0026] It is worth mentioning here that, as Figure 2 As shown, the oil inlet assembly 3 also includes several annular oil passages 32 disposed on the spindle 2 and a first through hole 33 disposed on the housing 1 communicating with the annular oil passages 32; the present invention connects to the first through hole 33 through an external oil passage, and the hydraulic oil enters the oil passage 31 after passing through the first through hole 33 and the annular oil passages 32.

[0027] In this example, as Figures 3 to 4As shown, the sealing assembly 6 includes several second through holes 61 formed on the rotating shaft 4, a first slot 62 formed on the side wall of the second through holes 61, an air bladder 63 set at the connection between the oil pipe 51 and the oil passage 31, an air inlet pipe 64 set on the side of the air bladder 63, a piston cylinder 65 set at the end of the air inlet pipe 64, a piston rod 66 slidably set in the piston cylinder 65, and a conical column 67 set at the end of the piston rod 66. In this invention, the oil pipe 51 presses down and squeezes the conical column 67, the conical column 67 moves into the piston cylinder 65, and the piston rod 66 squeezes the gas in the air inlet pipe 64 into the air bladder 63, causing the air bladder 63 to expand. The soft material can provide better sealing for rigid connecting parts.

[0028] Furthermore, such as Figures 3 to 5 As shown, the limiting component 7 includes a tapered groove 71 at the lower end of the oil pipe 51, a second slot 72 formed on the side wall of the second through hole 61, a movable column 73 slidably disposed in the second slot 72, a return spring 74 disposed between the movable column 73 and the second slot 72, and a guide column 75 disposed in the middle of the return spring 74; the upper and lower end faces of the movable column 73 are inclined surfaces, and the angle formed by the inclined surfaces is 55°-65°; by the movable column 73 being engaged in the tapered groove 71, the oil pipe 51 can be limited in the oil passage 31, preventing the oil pipe 51 from loosening after long-term use.

[0029] It is worth mentioning that a rectangular guide post 75 is provided in the middle of the return spring 74, so that the movable post 73 will not rotate, and the inclined surface of the front end face of the movable post 73 is opposite to the conical groove 71.

[0030] In addition, such as Figure 1 As shown, the oil pipe assembly 5 is divided into an oil inlet pipe, an oil outlet pipe, a return oil pipe, and an air pipe. The oil inlet pipe and the oil outlet pipe are a group, and the number of the return oil pipe and the air pipe is one each. An oil circuit distributor 8 is provided at the upper end of the oil pipe assembly 5, and several fixing rings 52 are provided on the oil pipe assembly 5.

[0031] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A hydraulic rotary device suitable for multi-axis combination machine tools, comprising a housing (1) and a spindle (2) rotatably disposed within the housing (1), characterized in that: The housing (1) is provided with an oil inlet assembly (3), which includes an oil passage (31) disposed in the spindle (2). The housing (1) is provided with a rotating shaft (4), which is provided with an oil pipe assembly (5). The oil pipe assembly (5) includes several oil pipes (51), which are connected to the oil passage (31). A sealing assembly (6) is provided at the connection between the oil pipe (51) and the oil passage (31), and a limit assembly (7) is provided at the upper end of the sealing assembly (6).

2. The hydraulic rotary device suitable for multi-axis combination machine tools according to claim 1, characterized in that, The oil inlet assembly (3) also includes a plurality of annular oil channels (32) disposed on the spindle (2) and a first through hole (33) disposed on the housing (1) communicating with the annular oil channels (32).

3. A hydraulic rotary device suitable for multi-axis combination machine tools according to claim 1, characterized in that, The sealing assembly (6) includes a plurality of second through holes (61) opened on the rotating shaft (4), a first slot (62) opened on the side wall of the second through holes (61), an air bladder (63) provided at the connection between the oil pipe (51) and the oil passage (31), an air inlet pipe (64) provided on the side of the air bladder (63), a piston cylinder (65) provided at the end of the air inlet pipe (64), a piston rod (66) slidably provided in the piston cylinder (65), and a tapered column (67) provided at the end of the piston rod (66).

4. A hydraulic rotary device suitable for multi-axis combination machine tools according to claim 1, characterized in that, The limiting component (7) includes a tapered groove (71) at the lower end of the oil pipe (51), a second slot (72) opened on the side wall of the second through hole (61), a movable column (73) slidably disposed in the second slot (72), a return spring (74) disposed between the movable column (73) and the second slot (72), and a guide column (75) disposed in the middle of the return spring (74).

5. A hydraulic rotary device suitable for multi-axis combination machine tools according to claim 4, characterized in that, The upper and lower ends of the movable column (73) are inclined surfaces, and the angle formed by the inclined surfaces is 55°-65°.

6. A hydraulic rotary device suitable for multi-axis combination machine tools according to claim 1, characterized in that, The oil pipe assembly (5) is divided into an oil inlet pipe, an oil outlet pipe, a return oil pipe, and an air pipe. The oil inlet pipe and the oil outlet pipe are a group, and the number of the return oil pipe and the air pipe is one each.

7. A hydraulic rotary device suitable for multi-axis combination machine tools according to claim 1, characterized in that, The upper end of the oil pipe assembly (5) is provided with an oil circuit distributor (8), and the oil pipe assembly (5) is provided with a plurality of fixing rings (52).

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