Hydraulic oil control structure of numerical control rotary table

Abstract

The utility model belongs to the technical field of numerical control rotary tables, and particularly relates to a hydraulic oil control structure of a numerical control rotary table. According to the utility model, the control valve is arranged on the shell of the numerical control rotary table, and the other end of the input pipeline extends to the surface of the shell to form the open wire butt joint port, so that the hydraulic oil output end of the control valve is connected with the open wire butt joint port by virtue of the open wire pipeline arranged outside the shell; the interior of the shell is connected to a hydraulic connector of a table top in an existing built-in pipeline mode, so that the control valve is installed nearby, the response speed of hydraulic control is increased, open wire installation is achieved, the difficulty of design manufacturing and later maintenance is lowered, and the product competitiveness is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control rotary table technical field, concretely relates to a numerical control rotary table hydraulic oil control structure. BACKGROUND

[0002] Numerical control rotary table adopts torque motor drive, has strong bearing capacity, response speed is fast, angle precision and so on advantage, can cooperate numerical control machine tool, industrial robot etc. and realizes high precision, automation's multi -axis processing, injects new power for intelligent manufacturing. The numerical control rotary table bears the workpiece to be processed and adjusts the workpiece position and posture with the machine tool. At present, the table surface of the numerical control rotary table is reserved with a hydraulic interface. When the hydraulic clamp is installed on the table surface, the hydraulic interface can be connected for clamping the workpiece and other operations.

[0003] Since the table surface and the shell of the numerical control rotary table are in a moving state during work, the supply pipeline of hydraulic oil mainly adopts an embedded mode to avoid winding, that is, the pipeline is processed inside the shell, the fixed seat and other parts. The pipeline is connected to a distributor and then sent to the table surface. For the numerical control rotary table with A and B axis motion freedom, all the pipelines are led out from the B axis and then distributed to the A axis. In addition, the hydraulic pump station and the control valve are usually arranged outside the machine tool. Therefore, the pipeline is long, the sealing links are many, the design and processing are difficult, the leakage is not easy to repair, the control valve is far away from the table surface, the pressure equipment is difficult to control, and the response speed is slow. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a numerical control rotary table hydraulic oil control structure, can arrange control valve nearby, improve the response speed of hydraulic pressure, and it is helpful to shorten the length of built-in pipeline, reduce the design and processing cost, and it is convenient to maintain and overhaul.

[0005] The utility model adopts the specific technical scheme:

[0006] A numerical control rotary table hydraulic oil control structure, including control valve, control valve be connected between hydraulic pump station and the distributor of numerical control rotary table, numerical control rotary table includes the shell and the table surface that rotates relative shell by drive motor, the distributor is circular shaft structure and is arranged below the table surface, the shell is provided with the input pipeline and the output pipeline that communicate with the distributor, the output pipeline other end is through with the hydraulic interface reserved on the table surface, control valve is installed on the shell, the other end of input pipeline extends to the shell surface and forms the clear line butt joint, the hydraulic oil output end of control valve is connected with clear line butt joint by the clear line pipeline that sets up outside the shell, hydraulic pump station is supplied with pressure for the hydraulic interface on the table surface by the control valve that sets up on the shell.

[0007] The CNC rotary table includes a B-axis and an A-axis. The B-axis is connected to the machine tool via a drive motor. The A-axis includes two sets of A1 and A2 axes symmetrically arranged on both sides of the housing. The B-axis, A1 axis, and A2 axis are arranged in a T-shape via the housing. Both A1 axis and A2 axis have a table surface via a drive motor. The control valves are also symmetrically arranged on both sides of the housing and are respectively connected to the table surfaces of A1 axis and A2 axis.

[0008] The control valve is also fitted with a box-shaped protective cover, and the exposed pipeline extends out of the protective cover.

[0009] The protective cover is equipped with an observation window covered with a transparent material, and a pressure gauge connected to the control valve is installed inside the observation window.

[0010] The housing is also provided with an outer seat ring, a fixed seat, and a rotating seat. The exposed wire interface is provided on the outer seat ring. The outer seat ring is fixedly connected to the housing and the fixed seat respectively. An input pipe is provided in the side wall of the outer seat ring and the fixed seat. The platform is fixedly connected to the rotating seat. An output pipe is provided in the side wall of the platform and the rotating seat.

[0011] The stator of the drive motor is fixedly connected to the housing, and the rotor of the drive motor is fixedly connected to the platform via a rotating seat. The distributor includes a spindle and a rotating sleeve. The spindle is fixedly connected to the fixed seat, and the rotating sleeve is fixedly connected to the rotating seat. The rotating sleeve has a degree of freedom to rotate relative to the spindle.

[0012] The mandrel has an inlet pipe connected to the input pipe inside its side wall, and an outlet pipe connected to the output pipe inside its rotating sleeve. An annular cavity is left between the mandrel and the rotating sleeve, and this cavity is divided into multiple distribution cavities by means of a sealing ring. The inlet pipe and the outlet pipe are respectively connected to the distribution cavities.

[0013] Multiple sets of input and output pipelines are installed on the housing.

[0014] The beneficial effects of this utility model are:

[0015] This invention employs a method of mounting the control valve on the housing and extending the other end of the input pipeline to the surface of the housing to form an exposed connection interface. This allows the hydraulic oil output end of the control valve to connect to the exposed connection interface via an exposed pipeline located outside the housing. The interior of the housing is connected to the hydraulic interface on the platform using the existing built-in pipeline method. This allows the control valve to be installed nearby, which helps to improve the response speed of hydraulic control. Furthermore, the exposed installation helps to reduce the difficulty of design, manufacturing, and subsequent maintenance, thereby enhancing product competitiveness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the control valve section;

[0018] Figure 3 This is a plan view of the present invention;

[0019] Figure 4 This is a schematic diagram of the GG cross-section;

[0020] Figure 5 This is a schematic diagram of section II;

[0021] In the attached diagram, 1 is the control valve, 2 is the distributor, 3 is the housing, 4 is the drive motor, 5 is the platform, 6 is the input pipe, 7 is the output pipe, 8 is the hydraulic interface, 9 is the exposed pipe, 10 is the exposed pipe connection, 11 is the protective cover, 12 is the observation window, 13 is the outer seat ring, 14 is the fixed seat, 15 is the rotating seat, 16 is the spindle, 17 is the rotating sleeve, 18 is the inlet pipe, 19 is the outlet pipe, and 20 is the distribution chamber. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Specific implementation examples Figure 1 As shown, this utility model is a hydraulic oil control structure for a CNC rotary table, including a control valve 1. The control valve 1 is connected between a hydraulic pump station and a distributor 2 of the CNC rotary table. The CNC rotary table includes a housing 3 and a table surface 5 that rotates relative to the housing 3 by means of a drive motor 4. The distributor 2 is a cylindrical structure and is set below the table surface 5. The housing 3 is provided with an input pipe 6 and an output pipe 7 that communicate with the distributor 2. The other end of the output pipe 7 is connected to a hydraulic interface 8 reserved on the table surface 5. The control valve 1 is installed on the housing 3. The other end of the input pipe 6 extends to the surface of the housing 3 to form a surface-mounted interface 10. The hydraulic oil output end of the control valve 1 is connected to the surface-mounted interface 10 by means of a surface-mounted pipe 9 set outside the housing 3. The hydraulic pump station supplies pressure to the hydraulic interface 8 on the table surface 5 by means of the control valve 1 set on the housing 3.

[0024] like Figure 1 and Figure 2 As shown, by installing the control valve 1 on the housing 3 of the CNC rotary table, the length of the hydraulic oil pipeline in the housing 3 of the CNC rotary table is shortened, which helps to reduce the difficulty of design and manufacturing and improve the maintainability of the equipment.

[0025] Furthermore, such as Figure 1As shown, the CNC rotary table includes a B-axis and an A-axis. The B-axis is connected to the machine tool via a drive motor 4. The A-axis includes two sets of A1 and A2 axes symmetrically arranged on both sides of the housing 3. The B-axis, A1 axis, and A2 axis are arranged in a T-shape via the housing 3. Both A1 axis and A2 axis are provided with a table surface 5 via the drive motor 4. The control valve 1 is also symmetrically arranged in two sets on both sides of the housing 3 and is connected to the table surface 5 of the A1 axis and A2 axis respectively.

[0026] The embodiment shown in this utility model is a horizontal five-axis linkage CNC rotary table with A1 axis and A2 axis. When in use, the B axis is connected to the machine tool. During processing, the A1 axis and A2 axis are the main processing axes, and the B axis is mainly used to rotate the A1 axis and A2 axis to load and unload the workpiece. Therefore, the B axis and the housing 3 are in reciprocating motion, which facilitates the connection between the hydraulic pump station and the control valve 1.

[0027] Furthermore, a box-shaped protective cover 11 is fitted over the control valve 1, and the exposed conduit 9 extends out of the protective cover 11. The protective cover 11 is used to shield the control valve 1 and prevent processing debris from splashing and damaging the control valve 1.

[0028] Furthermore, such as Figure 1 As shown, the protective cover 11 is provided with an observation window 12 covered with a transparent material, and a pressure gauge connected to the control valve 1 is provided inside the observation window 12.

[0029] Furthermore, such as Figure 1 and Figure 4 , Figure 5 As shown, the housing 3 is also provided with an outer seat ring 13, a fixed seat 14 and a rotating seat 15. The exposed wire interface 10 is provided on the outer seat ring 13. The outer seat ring 13 is fixedly connected to the housing 3 and the fixed seat 14 respectively. An input pipe 6 is provided in the side wall of the outer seat ring 13 and the fixed seat 14. The platform 5 is fixedly connected to the rotating seat 15. An output pipe 7 is provided in the side wall of the platform 5 and the rotating seat 15.

[0030] The stator of the drive motor 4 is fixedly connected to the housing 3, and the rotor of the drive motor 4 is fixedly connected to the platform 5 via a rotating seat 15. The distributor 2 includes a spindle 16 and a rotating sleeve 17. The spindle 16 is fixedly connected to a fixed seat 14, and the rotating sleeve 17 is fixedly connected to the rotating seat 15. The rotating sleeve 17 has a degree of freedom to rotate relative to the spindle 16. Figure 4 As shown, the drive motor 4 has a ring structure, and the distributor 2 is fitted inside the inner ring of the drive motor 4.

[0031] The mandrel 16 has an inlet pipe 18 connected to the input pipe 6 inside its side wall, and the rotating sleeve 17 has an outlet pipe 19 connected to the output pipe 7 inside its sleeve. An annular cavity is left between the mandrel 16 and the rotating sleeve 17. This cavity is divided into multiple distribution cavities 20 by means of a sealing ring. The inlet pipe 18 and the outlet pipe 19 are respectively connected to the distribution cavities 20.

[0032] like Figure 4 and Figure 5 As shown, when the CNC rotary table of this utility model is in use, hydraulic oil is supplied to the input pipeline 6 through a hydraulic pump station and control valve 1, such as... Figure 4 and Figure 5 As shown in the bolded section, hydraulic oil enters the distribution chamber 20 of the distributor 2 along the input pipe 6 and the inlet pipe 18. The distribution chamber 20 is an annular cavity. [The text then abruptly shifts to a seemingly unrelated topic:] ... Figure 5 The outlet pipe 19 and output pipe 7 shown enter the hydraulic interface 8 of the platform 5. Multiple sets of input pipe 6 and output pipe 7 are provided on the housing 3. The flow direction of the oil in the above-mentioned input pipe 6, output pipe 7, inlet pipe 18 and outlet pipe 19 can be achieved by setting the control valve 1 as a two-position three-way directional valve to supply and return oil, thereby realizing pipeline reuse and facilitating the control of the pressure equipment on the platform 5.

Claims

1. A hydraulic oil control structure for a CNC rotary table, comprising a control valve (1), wherein the control valve (1) is connected between a hydraulic pump station and a distributor (2) of the CNC rotary table, the CNC rotary table comprising a housing (3) and a table surface (5) that rotates relative to the housing (3) by means of a drive motor (4), the distributor (2) being arranged in a circular shaft shape below the table surface (5), the housing (3) being provided with an input pipe (6) and an output pipe (7) communicating with the distributor (2), the other end of the output pipe (7) being connected to a hydraulic interface (8) reserved on the table surface (5), characterized in that: The control valve (1) is installed on the shell (3), the other end of the input pipeline (6) extends to the surface of the shell (3) to form a clear line interface (10), and the hydraulic oil output end of the control valve (1) is connected with the clear line interface (10) through the clear line pipeline (9) arranged outside the shell (3), and the hydraulic pump station supplies pressure for the hydraulic interface (8) on the table (5) through the control valve (1) arranged on the shell (3).

2. The hydraulic oil control structure of a numerical control rotary table according to claim 1, wherein: The numerical control rotary table comprises a B shaft and an A shaft, the B shaft is connected with the machine tool through a driving motor, the A shaft comprises two groups of A1 shafts and A2 shafts which are symmetrically arranged on both sides of the shell (3), the B shaft, the A1 shaft and the A2 shaft are arranged in a T shape through the shell (3), the A1 shaft and the A2 shaft are both provided with a table (5) through a driving motor (4), and the control valve (1) is also symmetrically arranged on both sides of the shell (3) and connected with the tables (5) of the A1 shaft and the A2 shaft.

3. The hydraulic oil control structure of a numerical control rotary table according to claim 1, wherein: The control valve (1) is further sleeved with a protective cover (11) in the form of a box, and the clear line pipeline (9) penetrates out of the protective cover (11).

4. The hydraulic oil control structure of a numerical control rotary table according to claim 3, characterized in that: The protective cover (11) is provided with an observation window (12) covered with transparent material, and a pressure gauge in communication with the control valve (1) is arranged in the observation window (12).

5. The hydraulic oil control structure of a numerical control rotary table according to claim 1, wherein: The shell (3) is further provided with an outer race (13), a fixed seat (14) and a rotating seat (15), the clear line interface (10) is arranged on the outer race (13), the outer race (13) is fixedly connected with the shell (3) and the fixed seat (14), and the inner wall of the outer race (13) and the fixed seat (14) is provided with a through input pipeline (6); the table (5) is fixedly connected with the rotating seat (15), and the inner wall of the table (5) and the rotating seat (15) is provided with a through output pipeline (7).

6. The hydraulic oil control structure of a numerical control rotary table according to claim 5, wherein: The stator of the driving motor (4) is fixedly connected with the shell (3), the rotor of the driving motor (4) is fixedly connected with the table (5) through the rotating seat (15), the distributor (2) comprises a mandrel (16) and a rotating sleeve (17), the mandrel (16) is fixedly connected with the fixed seat (14), the rotating sleeve (17) is fixedly connected with the rotating seat (15), and the rotating sleeve (17) has the freedom of rotation relative to the mandrel (16); The inner wall of the mandrel (16) is provided with an inlet pipeline (18) in communication with the input pipeline (6), the rotating sleeve (17) is provided with an outlet pipeline (19) in communication with the output pipeline (7), and a ring-shaped cavity is left between the mandrel (16) and the rotating sleeve (17), the cavity is divided into a plurality of distribution cavities (20) through a sealing ring, and the inlet pipeline (18) and the outlet pipeline (19) are respectively in communication with the distribution cavities (20).

7. The hydraulic oil control structure of a numerical control rotary table according to claim 1, wherein: The input pipeline (6) and the output pipeline (7) are provided with a plurality of groups on the shell (3).

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