Turret device and machine tool

Abstract

The utility model provides a rotary table device and machine tool. Rotary table device includes fixed seat and workstation, the workstation rotatable setting in fixed seat, simultaneously, this rotary table device still includes first mount pad, second mount pad, time grid rotor, time grid stator, the center of fixed seat and workstation is provided with the installation hole along the axial penetration, first mount pad second mount pad time grid rotor time grid stator all are arranged in installation hole, first mount pad with workstation fixed connection, second mount pad with fixed seat fixed connection, time grid rotor fixed setting in first mount pad one side towards second mount pad, time grid stator fixed setting in second mount pad one side towards first mount pad, time grid rotor with time grid stator inductive cooperation. The utility model technical scheme provides rotary table device, can improve the measurement accuracy of workstation rotation amount.

Description

Technical Field

[0001] This utility model relates to the field of rotary table devices and machine tool technology, and in particular to a rotary table device and machine tool. Background Technology

[0002] The machine tool rotary table, also known as the machine tool rotary worktable, is an important component of various machine tools (such as machining centers, boring machines, etc.). It is mainly used to realize the rotation indexing and positioning of the workpiece so that multiple surfaces can be machined in one clamping, thereby improving machining accuracy and production efficiency.

[0003] The rotation of the turntable is measured by an encoder. Most existing encoders are installed at the bottom or middle of the turntable. Encoders located at the bottom are easy to adjust and are convenient to install and maintain (please refer to the utility model patent with patent publication number CN214171135U).

[0004] However, because the encoder is far from the worktable, it cannot be directly connected to the worktable. The rotational displacement is transmitted to the encoder through the transmission components, and there will be a delay between the measured data and the actual data. If the encoder installed in the middle of the turntable needs to be repaired or maintained, the worktable needs to be disassembled, which is time-consuming and laborious.

[0005] Therefore, how to provide a turntable device that can improve the measurement accuracy of the worktable rotation is an urgent problem to be solved. Utility Model Content

[0006] This utility model provides a turntable device and machine tool that can improve the measurement accuracy of the worktable rotation.

[0007] This utility model provides a turntable device, including a fixed base and a worktable, wherein the worktable is rotatably mounted on the fixed base.

[0008] It also includes a first mounting base, a second mounting base, a time grating rotor, and a time grating stator. The center of the fixed base and the worktable is provided with a mounting hole that runs through the axis. The first mounting base, the second mounting base, the time grating rotor, and the time grating stator are all disposed in the mounting hole. The first mounting base is fixedly connected to the worktable, and the second mounting base is fixedly connected to the fixed base. The time grating rotor is fixedly disposed on the side of the first mounting base facing the second mounting base, and the time grating stator is fixedly disposed on the side of the second mounting base facing the first mounting base. The time grating rotor and the time grating stator are inductively coupled to obtain the rotation angle of the worktable.

[0009] In some feasible implementations, the first mounting base includes a mounting cylinder and a connecting cylinder, the diameter of the mounting cylinder is larger than the diameter of the connecting cylinder, the inner ring of the mounting cylinder is connected to the connecting cylinder, the worktable is provided with a mounting groove, the mounting cylinder is disposed in the mounting groove and locked by fasteners along the axial direction of the mounting cylinder, the timer rotor is disposed axially at the end of the connecting cylinder opposite to the mounting cylinder, and the first mounting base passes through the worktable.

[0010] In some feasible implementations, the fixed base is provided with a positioning protrusion on the side facing the worktable, the second mounting base is annular, and the second mounting base is positioned and engaged with the positioning protrusion.

[0011] In some feasible embodiments, the second mounting base includes a support body and a mounting body. The support body is fixedly mounted on the fixed base and is positioned in conjunction with a positioning protrusion ring. The mounting body is fixedly mounted on the side of the support body opposite to the fixed base. The time grating stator is detachably mounted on the mounting body.

[0012] In some feasible implementations, the inner ring of the time grating rotor is fixedly connected to the inner ring of the first mounting base, the outer ring of the time grating stator is fixedly connected to the outer ring of the second mounting base, and the outer ring of the time grating rotor is inductively engaged with the inner ring of the time grating stator.

[0013] In some feasible implementations, the system further includes an oil distribution shaft, an oil delivery sleeve, and an oil passage structure disposed between the oil distribution shaft and the oil delivery sleeve. The oil distribution shaft is fixedly disposed in the mounting hole of the fixed seat, and the oil distribution shaft has an extension shaft extending toward the worktable. The first mounting seat is hollow along the axial direction. The oil delivery sleeve is fixedly disposed in the hollow structure of the first mounting seat, and the oil delivery sleeve passes through the first mounting seat and is rotatably sleeved on the extension shaft.

[0014] In some feasible embodiments, the first mounting base is provided with a fixing groove along the axial direction, the oil delivery sleeve includes a fixing flange and a sleeve body integrally formed with the fixing flange, the diameter of the fixing flange is larger than the diameter of the sleeve body, the fixing flange is fixedly installed in the fixing groove, and the sleeve body is sleeved on the extension shaft.

[0015] In some feasible embodiments, the oil distribution shaft further includes a mounting flange, the extension shaft is fixedly connected to the mounting flange, the mounting flange is disposed on the side of the fixed seat away from the worktable, and the mounting flange is fixedly connected to the fixed seat by fasteners disposed along the axial direction; the second mounting seat is disposed on the side of the fixed seat facing the worktable.

[0016] In some feasible embodiments, a connecting ring seat is also included, which is disposed on the periphery of the worktable facing the fixed seat. The worktable is rotatably connected to the fixed seat via a rotating member, which includes an inner ring body, an outer ring body, and a rolling element disposed between the inner ring body and the outer ring body. The inner ring body is fixedly connected to the fixed seat, and the outer ring body is fixedly connected to the connecting ring seat. The time grating rotor and the time grating stator are located in the cavity formed by the connecting ring seat.

[0017] This utility model also provides a machine tool, including a base and the aforementioned rotary table device, wherein the fixed seat of the rotary table device is disposed on the base.

[0018] The aforementioned rotary table device and machine tool, by setting a fixed base and a worktable, wherein the worktable is rotatably mounted on the fixed base, further includes a first mounting base, a second mounting base, a time grating rotor, and a time grating stator. The fixed base and the worktable are provided with an axially penetrating mounting hole at their center. The first mounting base, the second mounting base, the time grating rotor, and the time grating stator are all disposed within the mounting hole. The first mounting base is fixedly connected to the worktable, and the second mounting base is fixedly connected to the fixed base. The time grating rotor is fixedly mounted on the side of the first mounting base facing the second mounting base, and the time grating stator is fixedly mounted on the side of the second mounting base facing the first mounting base. The time grating rotor and the time grating stator are inductively coupled to obtain the rotation angle of the worktable, thereby improving the measurement accuracy of the worktable rotation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a turntable device provided in an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of a turntable device provided in an embodiment of the present invention.

[0022] Figure 3 for Figure 2 A schematic diagram of a local structure.

[0023] Component Symbol Explanation

[0024] 100, Fixed seat; 110, Positioning convex ring; 200, Worktable; 201, Mounting groove; K, Mounting hole; R, Rotating component; R1, Inner ring body; R2, Outer ring body; Z, Axial direction; 300, First mounting seat; 301, Fixed groove; 310, Mounting cylinder; 320, Connecting cylinder; 400, Second mounting seat; 410, Support body; 420, Mounting body; 500, Timer rotor; 600, Timer stator; 700, Oil distribution shaft; 710, Extension shaft; 720, Mounting flange; 800, Oil delivery sleeve; 810, Fixed flange; 820, Sleeve body; 900, Connecting ring seat; Y, Oil circuit structure.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] To provide a clearer and more accurate understanding of the present invention, a detailed description will now be provided in conjunction with the accompanying drawings. The accompanying drawings illustrate examples of embodiments of the present invention, wherein the same reference numerals denote the same elements. It is to be understood that the scale shown in the accompanying drawings is not the actual scale of the present invention, but is for illustrative purposes only and is not a drawing based on the original dimensions.

[0030] Please refer to Figure 1 and 2 This utility model provides a turntable device, including a fixed base 100 and a worktable 200.

[0031] The mounting base 100 provides support for the worktable 200 and other objects mounted on it. In this embodiment, the outer radial portion of the mounting base 100 is prismatic; however, it is understood that the shape of the outer portion of the mounting base 100 is not limited to this, and the mounting base 100 may also be columnar. The inner radial portion of the mounting base 100 has a support ring, which is hollow.

[0032] Please refer to Figure 1 The worktable 200 is used to support workpieces and is rotatably mounted on the fixed base 100. In this embodiment, the worktable 200 is rotatably connected to the fixed base 100 via a rotating member R. The rotating member R is located at the outer periphery of the lower surface of the worktable 200, thereby freeing up the center position of the worktable 200. The worktable 200 is provided with a mounting groove 201, which is located at the radial center of the worktable 200. This groove allows for the installation of other structural components while ensuring that the worktable 200 can rotate relative to the fixed base 100.

[0033] Please refer to Figure 1 and 2 The fixed base 100 and the worktable 200 are provided with a mounting hole K that runs through the center along the axial direction Z. It can be understood that the mounting hole K includes a hollow structure formed by the support ring of the fixed base 100, a mounting groove 201 provided at the center of the worktable 200 along the radial direction, and a cavity located between the fixed base 100 and the worktable 200 along the axial direction Z.

[0034] Please refer to Figure 2 and 3 The turntable device also includes a first mounting base 300, a second mounting base 400, a time grid rotor 500, and a time grid stator 600. The first mounting base 300, the second mounting base 400, the time grid rotor 500, and the time grid stator 600 are all disposed in the mounting hole K. This facilitates the installation of the first mounting base 300, the second mounting base 400, the time grid rotor 500, and the time grid stator 600 in the mounting hole K, and also facilitates the removal of the first mounting base 300, the second mounting base 400, the time grid rotor 500, and the time grid stator 600 in the mounting hole K.

[0035] To facilitate the synchronous measurement of the rotation of the worktable 200, the first mounting base 300 is fixedly connected to the worktable 200. By fixing the first mounting base 300 to the worktable 200, when the worktable 200 rotates, the first mounting base 300 can rotate instantaneously with the worktable 200, and the rotation of the first mounting base 300 is synchronous with and equal to the rotation of the worktable 200.

[0036] Please refer to Figure 2 and 3 In order to reduce the length of the first mounting base 300 along the Z-axis and make the first mounting base 300 closer to the back of the worktable 200, the second mounting base 400 is fixedly connected to the fixed base 100. The second mounting base 400 is close to the back of the worktable 200 along the Z-axis. This allows the length of the first mounting base 300 along the Z-axis to be reduced. The length of the first mounting base 300 along the Z-axis can be slightly larger than the thickness of the worktable 200, so that the bottom of the first mounting base 300 extends out from the back of the worktable 200.

[0037] Please refer to Figure 3 To facilitate the installation of the time grid rotor 500 and to bring the time grid rotor 500 as close as possible to the worktable 200 along the Z-axis, thereby reducing the rotational delay between the time grid rotor 500 and the worktable 200 along the Z-axis, a first mounting base 300 is used to install the time grid rotor 500. The time grid rotor 500 is close to the back of the worktable 200 along the Z-axis. The time grid rotor 500 is fixedly mounted on the side of the first mounting base 300 facing the second mounting base 400. The first mounting base 300 can also be removed and installed from the worktable 200 and can also be used to install the time grid rotor 500.

[0038] Please refer to Figure 3The specific structure of the first mounting base 300 is described below. The first mounting base 300 includes a mounting cylinder 310 and a connecting cylinder 320. The diameter of the mounting cylinder 310 is larger than the diameter of the connecting cylinder 320. The inner ring of the mounting cylinder 310 is connected to the connecting cylinder 320. The mounting cylinder 310 is disposed in the mounting groove 201 and is locked by fasteners along the axial direction Z of the mounting cylinder 310. The timer rotor 500 is disposed along the axial direction Z at one end of the connecting cylinder 320 away from the mounting cylinder 310. The first mounting base 300 passes through the worktable 200. The thickness of the mounting cylinder 310 along the axial direction Z is less than the thickness of the worktable 200. Thus, by setting a mounting groove 201 with a thickness less than the thickness of the worktable 200, the center of the worktable 200 has a stepped structure, which facilitates the installation of the mounting cylinder 310. The bottom of the connecting cylinder 320 can be flush with the back of the worktable 200 or slightly protrude from the back of the worktable 200 (the protrusion distance can be 1-15 mm). This allows the time grid rotor 500 to be as close as possible to the back of the worktable 200 or to contact the back of the worktable 200 without abutting, so as to avoid deformation of the time grid rotor 500 due to abutment.

[0039] To facilitate the installation of the time grating stator 600, a second mounting base 400 is used to install the time grating stator 600. The time grating stator 600 is fixedly disposed on the side of the second mounting base 400 facing the first mounting base 300. This makes the time grating stator 600 closer to the back of the worktable 200, reducing the measurement delay of the time grating stator 600 and improving the measurement accuracy of the time grating stator 600.

[0040] Please refer to Figure 3 To facilitate the mounting of the time grating stator 600 onto the second mounting base 400, a positioning protrusion 110 is provided on the side of the fixed base 100 facing the worktable 200. The second mounting base 400 is annular, and the second mounting base 400 and the positioning protrusion 110 are positioned and engaged. By providing the positioning protrusion 110 and the annular shape of the time grating stator 600, the time grating stator 600 can be easily fitted onto the outer circumference of the positioning protrusion 110. The gap between the positioning protrusion 110 and the time grating stator 600 can be within 10 mm, which can improve the positioning accuracy between the time grating stator 600 and the second mounting base 400. The gap between the positioning protrusion 110 and the time grating stator 600 can exceed 10 mm, which can increase the installation speed between the time grating stator 600 and the second mounting base 400 and improve assembly efficiency.

[0041] Please refer to Figure 3The specific structure of the second mounting base 400 is described below. The second mounting base 400 includes a support body 410 and a mounting body 420. The support body 410 is fixedly installed on the fixed base 100 and is positioned and engaged with the positioning protrusion ring 110. The mounting body 420 is fixedly installed on the side of the support body 410 away from the fixed base 100. The time grid stator 600 is detachably mounted on the mounting body 420. The support body 410 is annular, and the diameter of the end of the support body 410 near the worktable 200 is larger than the diameter of the end of the support body 410 near the fixed base 100. This facilitates the installation of the bottom of the support body 410 onto the fixed base 100 and also facilitates the opening of a positioning step on the top of the support body 410. The mounting body 420 is annular and is installed onto the support body 410 through the positioning step. It is understandable that, in order to facilitate the installation of the time grid stator 600, the mounting body 420 is also provided with a positioning groove on the side opposite to the support body 410. The positioning groove is located in the inner ring of the mounting body 420. The outer ring of the time grid stator 600 and the positioning groove are stacked along the Z-axis. The middle ring of the time grid stator 600 and the inner ring of the time grid stator 600 are suspended through the mounting body 420, which reduces the material of the inner ring of the mounting body 420, reduces the weight of the mounting body 420, and saves material.

[0042] Please refer to Figure 3 To facilitate the assembly and sensing of both the time-grid rotor 500 and the time-grid stator 600, the inner ring of the time-grid rotor 500 is fixedly connected to the inner ring of the first mounting base 300, serving as the mounting part, and the outer ring of the time-grid rotor 500 serves as the sensing part. The outer ring of the time-grid stator 600 is fixedly connected to the outer ring of the second mounting base 400, also serving as the mounting part, and the inner ring of the time-grid stator 600 also serves as the sensing part. The outer ring of the time-grid rotor 500 and the inner ring of the time-grid stator 600 are inductively engaged. This ensures that both the time-grid rotor 500 and the time-grid stator 600 are close to the back of the worktable 200 along the axial direction Z, and that the time-grid rotor 500 and the time-grid stator 600 can measure the rotation of the worktable 200 through sensing.

[0043] After the time grid rotor 500 and time grid stator 600 are positioned close to the worktable 200, in order to adapt to the worktable 200, the turntable device also includes an oil distribution shaft 700, an oil delivery sleeve 800, and an oil passage structure Y disposed between the oil distribution shaft 700 and the oil delivery sleeve 800. The oil distribution shaft 700 and the oil delivery sleeve 800 can rotate relative to each other. The oil passage structure Y includes an annular oil supply groove disposed on the outer periphery of the oil distribution shaft 700 and a channel disposed in the oil delivery sleeve 800. The channel is connected to the oil supply groove. Since the oil supply groove is annular, even if the oil delivery sleeve 800 rotates relative to the oil distribution shaft 700, the liquid or gas can be continuously transmitted between the oil distribution shaft 700 and the oil delivery sleeve 800 through the oil passage structure Y.

[0044] Please refer to Figure 3 The positional relationship between the oil distribution shaft 700 and the oil delivery sleeve 800 is described below. The oil distribution shaft 700 is fixedly installed in the mounting hole K of the fixed base 100, and the oil distribution shaft 700 has an extension shaft 710 extending toward the worktable 200. The first mounting base 300 has a hollow structure along the axial direction Z. The oil delivery sleeve 800 is fixedly installed in the hollow structure of the first mounting base 300, and the oil delivery sleeve 800 passes through the first mounting base 300 and can be rotatably sleeved on the extension shaft 710. When it is necessary to inspect the timer rotor 500 and the timer stator 600, both the oil delivery sleeve 800 and the first mounting base 300 need to be removed from the worktable 200. The timer rotor 500 is moved out of the mounting hole K through the first mounting base 300 to the outside. The timer stator 600 is exposed on the back of the worktable 200 through the mounting hole K. The operator can view, disassemble and install the timer stator 600 through the mounting hole K.

[0045] The following describes the positional and connection relationship between the oil delivery sleeve 800 and the first mounting base 300. The first mounting base 300 has a fixing groove 301 along the axial direction Z. The oil delivery sleeve 800 includes a fixing flange 810 and a sleeve body 820 integrally formed with the fixing flange 810. The diameter of the fixing flange 810 is larger than the diameter of the sleeve body 820. The fixing flange 810 is fixedly installed in the fixing groove 301, and the sleeve body 820 is sleeved on the extension shaft 710. It can be understood that the tops of the worktable 200, the first mounting base 300, and the oil delivery sleeve 800 are kept flush, that is, the top surfaces of the worktable 200, the mounting sleeve 310, and the fixing flange 810 are kept flush. This ensures that although the mounting hole K is opened on the worktable 200, it is filled by the mounting sleeve 310 and the fixing flange 810, and does not affect the original function of the worktable 200 in clamping workpieces.

[0046] Please refer to Figure 3The following describes the positional and connection relationships between the oil distribution shaft 700 and the fixed seat 100. The oil distribution shaft 700 also includes a mounting flange 720. The extension shaft 710 is fixedly connected to the mounting flange 720. The mounting flange 720 is located on the side of the fixed seat 100 facing away from the worktable 200. The mounting flange 720 is fixedly connected to the fixed seat 100 by fasteners arranged along the Z-axis. The second mounting seat 400 is located on the side of the fixed seat 100 facing the worktable 200. The support ring of the fixed seat 100 near the Z-axis is thinner, which facilitates the installation of the second mounting seat 400 on the side of the support ring near the worktable 200 and the mounting flange 720 on the side of the support ring facing away from the worktable 200. The second mounting seat 400 is radially located on the outer periphery of the extension shaft 710 and the outer periphery of the sleeve body 820. The connecting cylinder 320 is radially located on the outer periphery of the sleeve body 820 and the extension shaft 710.

[0047] In order to enable the worktable 200 to rotate stably relative to the fixed seat 100 along the Z-axis, the turntable device also includes a connecting ring seat 900, which is disposed on the periphery of the worktable 200 facing the fixed seat 100. The specific structure of the rotating component R is described below. The rotating component R includes an inner ring body R1, an outer ring body R2, and rolling elements disposed between the inner ring body R1 and the outer ring body R2. The rotating component R can be a crossed roller bearing. The inner ring body R1 is fixedly connected to the fixed seat 100, and the outer ring body R2 is fixedly connected to the connecting ring seat 900. The outer ring body R2 is fastened to the worktable 200 along the axial Z direction by fasteners through the connecting ring seat 900. The time grid rotor 500 and the time grid stator 600 are located in the cavity formed by the connecting ring seat 900, thereby ensuring that the time grid rotor 500 and the time grid stator 600 have sufficient installation space along the axial Z and radial directions in the mounting hole K, which can accommodate the time grid rotor 500 and the time grid stator 600, which occupy a large space, thereby ensuring the flexibility of selecting the time grid rotor 500 and the time grid stator 600.

[0048] Please refer to Figure 3 The time grating rotor 500 and the time grating stator 600 are inductively coupled to obtain the rotation angle of the worktable 200. When the worktable 200 rotates relative to the fixed seat 100, the time grating rotor 500 rotates relative to the time grating stator 600, thereby measuring the amount of rotation of the worktable 200 relative to the fixed seat 100.

[0049] The aforementioned turntable device, by providing a fixed base 100 and a worktable 200, wherein the worktable 200 is rotatably mounted on the fixed base 100, further includes a first mounting base 300, a second mounting base 400, a time grating rotor 500, and a time grating stator 600. The fixed base 100 and the worktable 200 are provided with a mounting hole K extending Z-axis through the center. The first mounting base 300, the second mounting base 400, the time grating rotor 500, and the time grating stator 600 are all disposed within the mounting hole K. The first mounting base 300 is fixedly connected to the worktable 200, the second mounting base 400 is fixedly connected to the fixed base 100, the time grating rotor 500 is fixedly disposed on the side of the first mounting base 300 facing the second mounting base 400, and the time grating stator 600 is fixedly disposed on the side of the second mounting base 400 facing the first mounting base 300. The time grating rotor 500 and the time grating stator 600 are inductively coupled to obtain the rotation angle of the worktable 200, which can improve the measurement accuracy of the rotation of the worktable 200.

[0050] In use, the time-grid rotor 500 and time-grid stator 600 can be installed through the mounting holes K, facilitating their installation. When the worktable 200 rotates relative to the fixed base 100, the worktable 200, the first mounting base 300, and the time-grid rotor 500 rotate relative to the fixed base 100, the second mounting base 400, and the time-grid stator 600. By measuring the rotation of the time-grid rotor 500 relative to the time-grid stator 600, the rotation of the worktable 200 relative to the fixed base 100 can be obtained. When it is necessary to disassemble the time-grid rotor 500 and the time-grid stator 600, they can be disassembled, inspected, maintained, and repaired through the mounting holes K.

[0051] This utility model also provides a machine tool, including a base and the aforementioned turntable device, wherein the fixed seat 100 of the turntable device is disposed on the base.

[0052] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0053] The above-listed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A turntable device, comprising a fixed base (100) and a worktable (200), wherein the worktable (200) is rotatably mounted on the fixed base (100), characterized in that, It also includes a first mounting base (300), a second mounting base (400), a time grid rotor (500), and a time grid stator (600). The fixed base (100) and the worktable (200) are provided with mounting holes (K) extending axially (Z) through their centers. The first mounting base (300), the second mounting base (400), the time grid rotor (500), and the time grid stator (600) are all disposed within the mounting holes (K). The first mounting base (300) and the worktable (200) are connected... The second mounting base (400) is fixedly connected to the fixed base (100). The time grating rotor (500) is fixedly disposed on the side of the first mounting base (300) facing the second mounting base (400). The time grating stator (600) is fixedly disposed on the side of the second mounting base (400) facing the first mounting base (300). The time grating rotor (500) and the time grating stator (600) are inductively engaged to obtain the rotation angle of the worktable (200).

2. The turntable device as described in claim 1, characterized in that, The first mounting base (300) includes a mounting cylinder (310) and a connecting cylinder (320). The diameter of the mounting cylinder (310) is larger than the diameter of the connecting cylinder (320). The inner ring of the mounting cylinder (310) is connected to the connecting cylinder (320). The worktable (200) is provided with a mounting groove (201). The mounting cylinder (310) is disposed in the mounting groove (201) and locked by fasteners along the axial direction (Z) of the mounting cylinder (310). The timer rotor (500) is disposed along the axial direction (Z) at one end of the connecting cylinder (320) away from the mounting cylinder (310). The first mounting base (300) penetrates the worktable (200).

3. The turntable device as described in claim 1, characterized in that, The fixed base (100) is provided with a positioning protrusion (110) on the side facing the worktable (200), and the second mounting base (400) is annular, and the second mounting base (400) is positioned and engaged with the positioning protrusion (110).

4. The turntable device as described in claim 3, characterized in that, The second mounting base (400) includes a support body (410) and a mounting body (420). The support body (410) is fixedly mounted on the fixed base (100) and the support body (410) is positioned in cooperation with the positioning protrusion ring (110). The mounting body (420) is fixedly mounted on the side of the support body (410) away from the fixed base (100). The time grid stator (600) is detachably mounted on the mounting body (420).

5. The turntable device as described in claim 4, characterized in that, The inner ring of the time grating rotor (500) is fixedly connected to the inner ring of the first mounting base (300), the outer ring of the time grating stator (600) is fixedly connected to the outer ring of the second mounting base (400), and the outer ring of the time grating rotor (500) is inductively engaged with the inner ring of the time grating stator (600).

6. The turntable device according to any one of claims 1-5, characterized in that, It also includes an oil distribution shaft (700), an oil delivery sleeve (800), and an oil passage structure (Y) disposed between the oil distribution shaft (700) and the oil delivery sleeve (800). The oil distribution shaft (700) is fixedly disposed in the mounting hole (K) of the fixed seat (100), and the oil distribution shaft (700) has an extension shaft (710) extending toward the worktable (200). The first mounting seat (300) has a hollow structure along the axial direction (Z). The oil delivery sleeve (800) is fixedly disposed in the hollow structure of the first mounting seat (300), and the oil delivery sleeve (800) passes through the first mounting seat (300) and is rotatably sleeved on the outside of the extension shaft (710).

7. The turntable device as described in claim 6, characterized in that, The first mounting base (300) is provided with a fixing groove (301) along the axial direction (Z). The oil delivery sleeve (800) includes a fixing flange (810) and a sleeve body (820) integrally formed with the fixing flange (810). The diameter of the fixing flange (810) is larger than the diameter of the sleeve body (820). The fixing flange (810) is fixedly installed in the fixing groove (301), and the sleeve body (820) is sleeved on the outside of the extension shaft (710).

8. The turntable device as described in claim 6, characterized in that, The oil distribution shaft (700) also includes a mounting flange (720), the extension shaft (710) is fixedly connected to the mounting flange (720), the mounting flange (720) is disposed on the side of the fixed seat (100) away from the worktable (200), and the mounting flange (720) is fixedly connected to the fixed seat (100) by fasteners disposed along the axial direction (Z); the second mounting seat (400) is disposed on the side of the fixed seat (100) facing the worktable (200).

9. The turntable device according to any one of claims 1-5, characterized in that, It also includes a connecting ring seat (900), which is disposed on the periphery of the worktable (200) facing the fixed seat (100). The worktable (200) is rotatably connected to the fixed seat (100) via a rotating member (R). The rotating member (R) includes an inner ring body (R1), an outer ring body (R2), and a rolling element disposed between the inner ring body (R1) and the outer ring body (R2). The inner ring body (R1) is fixedly connected to the fixed seat (100), and the outer ring body (R2) is fixedly connected to the connecting ring seat (900). The time grating rotor (500) and the time grating stator (600) are located in the cavity formed by the connecting ring seat (900).

10. A machine tool, characterized in that, Includes a base and a turntable device as described in any one of claims 1-9, wherein the fixed seat (100) of the turntable device is disposed on the base.

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