Five-axis linkage machine tool rotary table

Abstract

The utility model discloses a five-axis linkage machine tool rotary table which comprises a clamp and a rotary sealing mechanism. The rotary sealing mechanism comprises a rotary sealing channel block, a rotary sealing mandrel and a sealing assembly, a column groove is formed in the rotary sealing channel block, the rotary sealing mandrel is arranged in the column groove, and four independent annular grooves are formed in the groove wall of the column groove from top to bottom in the circumferential direction. Hydraulic and pneumatic control is achieved on the same rotary sealing mechanism, the overall layout is more reasonable, continuity and matching performance of fluid are guaranteed, in addition, by means of the structural design, space can be saved, the weight of the whole rotary table is reduced, complex hydraulic and pneumatic pipelines are achieved in the limited space, and the cost is reduced. And the dynamic performance and reliability of the turntable are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of five-axis linkage machine tools, in particular to a five-axis linkage machine tool turntable. Background Art

[0002] As a highly precise CNC machine tool, a five-axis CNC machine tool can perform simultaneous machining on three linear axes and two rotary axes, thereby improving the machining accuracy and production efficiency of complex workpieces. The turntable is a key component of a five-axis CNC machine tool, enabling the workpiece to rotate, allowing the tool to approach the workpiece from different angles, thereby producing complex geometries.

[0003] Currently, the fixture control method for five-axis linkage machine tool turntables is mainly pneumatic. However, due to the demand for hydraulic fixtures in some specialized industries, some five-axis linkage machine tool turntables now offer both pneumatic and hydraulic control. However, because the five-axis turntable is a rotating component with limited space and a complex structure, the matching design between the hydraulic and pneumatic circuits of the turntable is poor, and the layout is not reasonable. This affects the fluidity of the hydraulic oil, making it prone to pressure loss and stagnation. In addition, the sealing problem has not been properly resolved. Summary of the Invention

[0004] To address the aforementioned technical issues, the present invention provides a five-axis linkage machine tool turntable. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is provided below. This summary is not intended to be a comprehensive review, identify key or important components, or delineate the scope of protection for these embodiments. Its sole purpose is to present some concepts in a simplified form, serving as a prelude to the detailed description that follows.

[0005] The utility model adopts the following technical solutions:

[0006] A five-axis linkage machine tool turntable is provided, comprising: a fixture and a rotary sealing mechanism; the rotary sealing mechanism comprises: a rotary sealing channel block and a rotary sealing core shaft, the rotary sealing channel block is provided with a column groove, the rotary sealing core shaft is arranged in the column groove, and the groove wall of the column groove is provided with four independent annular grooves along the circumferential direction from top to bottom; the rotary sealing channel block is provided with a hydraulic oil inlet channel and a compressed gas inlet channel, and the outlet ends of the hydraulic oil inlet channel and the compressed gas inlet channel are arranged at the groove bottom of the annular groove; the rotary sealing core shaft is provided with a hydraulic oil outlet channel and a compressed gas outlet channel, and the inlet ends of the hydraulic oil outlet channel and the compressed gas outlet channel are located at the notch of the annular groove.

[0007] Furthermore, the four annular grooves opened on the groove wall of the column groove from top to bottom are respectively the first compressed air annular groove, the first hydraulic oil annular groove, the second hydraulic oil annular groove, and the second compressed air annular groove; there are two hydraulic oil inlet channels, and the two hydraulic oil inlet channels are respectively connected to the first hydraulic oil annular groove and the second hydraulic oil annular groove; there are two compressed air inlet channels, and the two compressed air inlet channels are respectively connected to the first compressed air annular groove and the second compressed air annular groove; there are two hydraulic oil outlet channels, and the inlet ends of the two hydraulic oil outlet channels correspond to the positions of the first hydraulic oil annular groove and the second hydraulic oil annular groove respectively; there are two compressed air outlet channels, and the inlet ends of the two compressed air outlet channels correspond to the positions of the first compressed air annular groove and the second compressed air annular groove respectively.

[0008] Furthermore, a sealing groove is provided on the groove wall of the column groove between two adjacent annular grooves, and a sealing assembly is arranged in the sealing groove; the sealing assembly includes: an outer A-type seal and an inner P-type seal, the outer A-type seal is arranged in the sealing groove, and the inner P-type seal is in contact with the outer wall of the rotating sealing core shaft.

[0009] Furthermore, the five-axis linkage machine tool turntable also includes: a fixture transition bracket and a workbench, the fixture is arranged on the top of the fixture transition bracket, the fixture transition bracket is arranged on the upper surface of the workbench, the rotary sealing mechanism is located below the workbench and the rotary sealing core shaft is connected to the workbench.

[0010] Furthermore, the five-axis linkage machine tool turntable also includes: two input side hydraulic oil passages and two input side compressed air passages; a hydraulic joint is provided at the inlet end of the input side hydraulic oil passage, and the outlet end of the input side hydraulic oil passage is connected to the hydraulic oil inlet channel; an air pipe joint is provided at the inlet end of the input side compressed air passage, and the outlet end of the input side compressed air passage is connected to the compressed air inlet channel.

[0011] Furthermore, the five-axis linkage machine tool turntable also includes: two output side hydraulic oil passages and two output side compressed air passages; the inlet end of the output side hydraulic oil passage is connected to the hydraulic oil derivation channel, and the outlet end of the output side hydraulic oil passage is connected to the hydraulic oil inlet on the fixture; the inlet end of the output side compressed air passage is connected to the compressed air derivation channel, and the outlet end of the output side compressed air passage is connected to the compressed air inlet on the fixture.

[0012] Furthermore, the five-axis linkage machine tool turntable further includes: a mounting bracket, and the rotary sealing channel block is connected to the mounting bracket.

[0013] The beneficial effects brought about by the utility model are: the present application realizes hydraulic and pneumatic control on the same rotary sealing mechanism, and the overall layout is more reasonable, so that the continuity and matching of the fluid are guaranteed. In addition, the structural design of the present application not only saves space and reduces the weight of the entire turntable, but also the complex hydraulic and pneumatic pipelines are realized in a limited space, thereby ensuring the dynamic performance and reliability of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a top view of a five-axis linkage machine tool turntable of the utility model;

[0016] Figure 2 yes Figure 1 AA cross-section diagram;

[0017] Figure 3 This is a structural diagram of the rotary sealing mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of one of the pneumatic pipelines of the utility model;

[0019] Figure 5 yes Figure 4 A partial enlarged schematic diagram;

[0020] Figure 6 This is a schematic diagram of another pneumatic pipeline of the utility model;

[0021] Figure 7 It is a schematic diagram of one hydraulic pipeline of the utility model. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the embodiments described are only a portion of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0023] like Figure 1-7As shown, in some illustrative embodiments, a five-axis linkage machine tool turntable is provided, including: a fixture 1, a fixture transition bracket 2, a workbench 3, a rotary sealing mechanism, a mounting bracket 4, two hydraulic pipelines, and two pneumatic pipelines.

[0024] The rotary sealing mechanism includes: a rotary sealing channel block 5, a rotary sealing core shaft 6 and a sealing assembly.

[0025] Fixture 1, used to secure the workpiece, is mounted atop fixture transition bracket 2. This bracket is designed to withstand the forces and vibrations generated during machining while maintaining the precise position of fixture 1. Fixture transition bracket 2 is mounted on the upper surface of worktable 3, beneath which a rotary sealing mechanism is located. This ensures effective sealing of hydraulic and pneumatic lines during turntable rotation.

[0026] The rotary seal channel block 5 is connected to the mounting bracket 4 to achieve fluid distribution. The rotary seal mandrel 6 is connected to the worktable 3 and rotates with it. Two hydraulic lines and two pneumatic lines are responsible for hydraulic and pneumatic control, respectively. They are connected to the rotary seal mechanism and provide power and control for the clamp 1. The hydraulic line is generally used to provide greater clamping force, while the pneumatic line is used for fast response and precise control.

[0027] A column groove is defined in the rotary seal channel block 5, and a rotary seal core shaft 6 is positioned within this groove. When the upper fixture 1, fixture transition bracket 2, and worktable 3 rotate, the rotary seal core shaft 6 rotates synchronously within the rotary seal channel block 5, while the rotary seal channel block 5 remains stationary. Four annular grooves are defined along the circumference of the column groove wall from top to bottom. These grooves are independent and disconnected from each other. Two of these grooves serve as portions of two hydraulic lines to transport hydraulic oil, while the other two serve as portions of two pneumatic lines to transport compressed air.

[0028] Specifically, the four annular grooves formed on the wall of the column groove from top to bottom are respectively a first compressed air annular groove 101, a first hydraulic oil annular groove 201, a second hydraulic oil annular groove 202, and a second compressed air annular groove 102. The first compressed air annular groove 101 and the second compressed air annular groove 102 are used to transport compressed air, while the first hydraulic oil annular groove 201 and the second hydraulic oil annular groove 202 are used to transport hydraulic oil.

[0029] The rotary sealing channel block 5 is provided with a hydraulic oil introduction channel 502 and a compressed gas introduction channel 501 .

[0030] There are two hydraulic oil inlet channels 502 , and the two hydraulic oil inlet channels 502 are respectively connected to the first hydraulic oil annular groove 201 and the second hydraulic oil annular groove 202 , that is, the outlet end of the hydraulic oil inlet channel 502 is set at the bottom of the annular groove.

[0031] There are two compressed gas introduction channels 501 , and the two compressed gas introduction channels 501 are respectively connected to the first compressed gas annular groove 101 and the second compressed gas annular groove 102 , that is, the outlet end of the compressed gas introduction channel 501 is set at the bottom of the annular groove.

[0032] A hydraulic oil outlet channel 602 and a compressed gas outlet channel 601 are provided in the rotary sealing core shaft 6 .

[0033] There are two hydraulic oil outlet channels 602, and the inlet ends of the two hydraulic oil outlet channels 602 correspond to the positions of the first hydraulic oil annular groove 201 and the second hydraulic oil annular groove 202 respectively, that is, the inlet ends of the hydraulic oil outlet channels 602 are located at the notches of the annular grooves, so that the hydraulic oil in the first hydraulic oil annular groove 201 and the second hydraulic oil annular groove 202 can flow into the two hydraulic oil outlet channels 602 respectively.

[0034] There are two compressed gas outlet channels 601, and the inlet ends of the two compressed gas outlet channels 601 correspond to the positions of the first compressed gas annular groove 101 and the second compressed gas annular groove 102, respectively. That is, the inlet ends of the compressed gas outlet channels 601 are located at the notches of the annular grooves, so that the compressed air in the first compressed gas annular groove 101 and the second compressed gas annular groove 102 can flow into the two compressed gas outlet channels 601, respectively.

[0035] The two hydraulic oil inlet channels 502 are respectively connected to the two hydraulic oil outlet channels 602 through two of the annular grooves, and the two compressed gas inlet channels 501 are respectively connected to the two compressed gas outlet channels 601 through the other two annular grooves. Therefore, the rotary sealing mechanism has a total of four channels. Through reasonable structural design, this application not only ensures the stable rotation of the turntable, but also makes the hydraulic control and pneumatic control independent of each other and do not affect each other, and thus jointly realizes the clamping and loosening of the clamp.

[0036] A sealing groove 503 is further provided on the groove wall of the column groove between two adjacent annular grooves, and a sealing groove 503 is also provided above the uppermost annular groove and below the lowermost annular groove. A sealing assembly 504 is arranged in the sealing groove 503, and the sealing assembly 504 is used to completely separate the annular grooves to prevent leakage of hydraulic oil and compressed air.

[0037] The sealing assembly 504 includes: an outer A-type seal and an inner P-type seal. The outer A-type seal is arranged in the sealing groove 503, and the inner P-type seal is in contact with the outer wall of the rotating sealing core shaft 6. The outer A-type seal usually adopts an O-ring, which is a closed elastic ring. The main function is to provide radial sealing under static conditions. The inner P-type seal usually consists of one or more sealing lips. The sealing lips are in close contact with the rotating sealing core shaft 6. The main function is to provide axial and / or radial sealing under dynamic conditions, especially in the presence of rotation and / or axial movement. The structural assembly of the A+P rotating seal ring of the present application combines A-type and P-type seals to form a double sealing system that can cope with more complex working conditions, such as the simultaneous presence of radial and axial movement, higher pressures and temperatures, and different media.

[0038] The turntable also includes two input-side hydraulic oil passages 702 and two input-side compressed air passages 701. The inlet ends of the input-side hydraulic oil passages 702 are provided with hydraulic connectors 7 for connection to the hydraulic system; their outlet ends are connected to the hydraulic oil inlet passage 502. The inlet ends of the input-side compressed air passages 701 are provided with air pipe connectors 8, and their outlet ends are connected to the compressed air inlet passage 501.

[0039] The turntable also includes two output-side hydraulic oil passages 902 and two output-side compressed air passages 901. The inlet of the output-side hydraulic oil passages 902 is connected to the hydraulic oil outlet passage 602, and the outlet of the output-side hydraulic oil passages 902 is connected to the hydraulic oil inlet of the fixture 1. The inlet of the output-side compressed air passage 901 is connected to the compressed air outlet passage 601, and the outlet of the output-side compressed air passage 901 is connected to the compressed air inlet of the fixture 1.

[0040] The input side hydraulic oil passage 702 , the hydraulic oil introduction channel 502 , the first hydraulic oil annular groove 201 , the second hydraulic oil annular groove 202 , the hydraulic oil outlet channel 602 , and the output side hydraulic oil passage 902 together constitute a hydraulic pipeline.

[0041] The input side compressed gas passage 701 , the compressed gas introduction channel 501 , the first compressed gas annular groove 101 , the second compressed gas annular groove 102 , the compressed gas outlet channel 601 , and the output side compressed gas passage 901 together constitute a pneumatic pipeline.

[0042] This application integrates hydraulic and pneumatic control systems to make the layout of the entire turntable more reasonable. The rotary sealing mechanism not only optimizes space utilization, but also improves the continuity and compatibility of fluid control, which is specifically reflected in the following aspects:

[0043] First, space optimization is achieved. By integrating hydraulic and pneumatic controls into the same rotary seal mechanism, space is greatly saved, making the turntable structure more compact.

[0044] Secondly, to ensure the continuity and compatibility of fluid control, the design of the rotary seal mechanism ensures that the hydraulic oil and compressed air can flow smoothly during the rotation of the turntable, avoiding pressure loss or flow stagnation, thereby ensuring the continuity and stability of power transmission during the processing;

[0045] Finally, dynamic performance and reliability are improved. This application implements a complex hydraulic and pneumatic pipeline layout within a limited space, avoiding interlacing and interference between them, improving the dynamic performance of the turntable, effectively reducing maintenance frequency and potential failure risks, and ensuring stable operation of the machine tool in harsh production environments.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A five-axis linkage machine tool turntable, characterized in that: include: Clamp and rotary sealing mechanism; The rotary sealing mechanism includes: a rotary sealing channel block and a rotary sealing core shaft. The rotary sealing channel block is provided with a column groove, the rotary sealing core shaft is arranged in the column groove, and the groove wall of the column groove is provided with four mutually independent annular grooves along the circumferential direction from top to bottom; A hydraulic oil inlet channel and a compressed gas inlet channel are provided on the rotary sealing channel block, and the outlet ends of the hydraulic oil inlet channel and the compressed gas inlet channel are arranged at the bottom of the annular groove; A hydraulic oil outlet channel and a compressed gas outlet channel are provided in the rotary sealing core shaft, and the inlet ends of the hydraulic oil outlet channel and the compressed gas outlet channel are located at the notch of the annular groove.

2. The five-axis linkage machine tool turntable according to claim 1, characterized in that: The four annular grooves opened on the groove wall of the column groove from top to bottom are respectively a first compressed air annular groove, a first hydraulic oil annular groove, a second hydraulic oil annular groove, and a second compressed air annular groove; There are two hydraulic oil inlet channels, and the two hydraulic oil inlet channels are respectively connected to the first hydraulic oil annular groove and the second hydraulic oil annular groove; There are two compressed gas introduction channels, and the two compressed gas introduction channels are respectively connected to the first compressed gas annular groove and the second compressed gas annular groove; There are two hydraulic oil outlet channels, and the inlet ends of the two hydraulic oil outlet channels correspond to the positions of the first hydraulic oil annular groove and the second hydraulic oil annular groove respectively; There are two compressed gas outlet channels, and the inlet ends of the two compressed gas outlet channels correspond to the positions of the first compressed gas annular groove and the second compressed gas annular groove respectively.

3. The five-axis linkage machine tool turntable according to claim 2, characterized in that: The groove wall of the column groove is also provided with a sealing groove between two adjacent annular grooves, and a sealing assembly is arranged in the sealing groove; the sealing assembly includes: an outer A-type seal and an inner P-type seal, the outer A-type seal is arranged in the sealing groove, and the inner P-type seal is in contact with the outer wall of the rotating sealing core shaft.

4. The five-axis linkage machine tool turntable according to claim 3, characterized in that: Also includes: A fixture transition bracket and a workbench, the fixture is arranged on the top of the fixture transition bracket, the fixture transition bracket is arranged on the upper surface of the workbench, the rotary sealing mechanism is located below the workbench and the rotary sealing core shaft is connected to the workbench.

5. The five-axis linkage machine tool turntable according to claim 4, characterized in that: Also includes: Two input-side hydraulic oil passages and two input-side compressed air passages; A hydraulic joint is provided at the inlet end of the input side hydraulic oil passage, and the outlet end of the input side hydraulic oil passage is connected to the hydraulic oil inlet channel; an air pipe joint is provided at the inlet end of the input side compressed gas passage, and the outlet end of the input side compressed gas passage is connected to the compressed gas inlet channel.

6. The five-axis linkage machine tool turntable according to claim 5, characterized in that: Also includes: Two output-side hydraulic oil passages and two output-side compressed air passages; The inlet end of the output side hydraulic oil passage is connected to the hydraulic oil derivation channel, and the outlet end of the output side hydraulic oil passage is connected to the hydraulic oil inlet on the clamp; the inlet end of the output side compressed gas passage is connected to the compressed gas derivation channel, and the outlet end of the output side compressed gas passage is connected to the compressed gas inlet on the clamp.

7. The five-axis linkage machine tool turntable according to claim 6, characterized in that: Also includes: A mounting bracket is provided, and the rotary sealing channel block is connected to the mounting bracket.

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