CNC rotary table for CNC spiral bevel gear machine tool and CNC spiral bevel gear machine tool

Abstract

This disclosure provides a CNC rotary table for a CNC spiral bevel gear machine tool and a CNC spiral bevel gear machine tool. The CNC rotary table includes: a first rotating assembly, including a first driving part and a first rotating shaft part, the first driving part being connected to the first rotating shaft part and used to drive the first rotating shaft part to rotate, the axis of the first rotating shaft part extending along a first direction; a second rotating assembly, disposed at one end of the first rotating shaft part, the second rotating assembly being used to connect to a workpiece to be processed and used to drive the workpiece to be processed to rotate around a second direction, the second direction being perpendicular to the first direction; a first braking assembly, disposed on the first rotating assembly, used to apply a first braking force to a first axial position of the first rotating shaft part; and a second braking assembly, disposed on the first rotating assembly, used to apply a second braking force to a second axial position of the first rotating shaft part, the second axial position being spaced apart from the first axial position along the first direction.

Description

Technical Field

[0001] This disclosure relates to the field of CNC machine tool technology, and in particular to a CNC rotary table for a CNC spiral bevel gear machine tool and a CNC spiral bevel gear machine tool. Background Technology

[0002] CNC machine tools used for machining spiral bevel gears are typically equipped with a CNC rotary table to drive the workpiece. During operation, the rotary table can drive the workpiece to rotate around a horizontal axis to a certain angular position, thereby adjusting the relative posture between the workpiece and the cutting tool. However, during the machining process, due to factors such as gravity and cutting forces, the angular position of the workpiece around the aforementioned horizontal axis is prone to fluctuation, which is detrimental to ensuring the machining quality of the workpiece. Utility Model Content

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, a CNC rotary table for a CNC spiral bevel gear machine tool is provided according to a first aspect of the present disclosure, comprising:

[0005] The first rotating assembly includes a first driving part and a first rotating shaft part. The first driving part is connected to the first rotating shaft part and is used to drive the first rotating shaft part to rotate. The axis of the first rotating shaft part extends along a first direction.

[0006] The second rotating assembly is disposed at one end of the first rotating shaft. The second rotating assembly is used to connect the workpiece to be processed and to drive the workpiece to be processed to rotate around a second direction, which is perpendicular to the first direction.

[0007] A first braking assembly is disposed on a first rotating assembly and is used to apply a first braking force to a first axial position of a first rotating shaft portion;

[0008] The second braking assembly is disposed on the first rotating assembly and is used to apply a second braking force to a second axial position of the first rotating shaft portion, wherein the second axial position and the first axial position are spaced apart along a first direction.

[0009] In one feasible embodiment, the first rotating shaft includes a first shaft segment, a second shaft segment, and a brake disc. The second shaft segment is connected between the first shaft segment and the brake disc. The first shaft segment, the second shaft segment, and the brake disc are arranged coaxially. A second rotating assembly is connected to the end of the first shaft segment away from the second shaft segment. The first shaft segment is connected to a first driving unit. The first braking assembly is used to apply a first braking force to the first shaft segment, and the second braking assembly is used to apply a second braking force to the brake disc.

[0010] In one feasible implementation, the first braking component includes:

[0011] A brake ring is movably fitted onto the first shaft section. A brake wall is formed at one end of the brake ring. The housing of the first drive unit has a mating wall arranged opposite to the brake wall. The brake wall is used to abut against the mating wall to apply friction to the mating wall.

[0012] The second drive unit is used to drive the brake ring to move along the first direction so that the brake wall abuts against or separates from the mating wall.

[0013] In one feasible implementation, the first braking component further includes:

[0014] A reset element is connected between the brake ring and the first shaft segment. The reset element is used to apply a reset force away from the mating wall to the brake ring in the first direction.

[0015] In one feasible implementation, the second braking component includes:

[0016] A double-acting cylinder has one end hinged to the brake disc on the side opposite to the second shaft section in the extension and retraction direction, and the other end hinged to the bed of the CNC spiral bevel gear machine tool.

[0017] In one feasible implementation, the CNC rotary table for a CNC spiral bevel gear machine tool further includes:

[0018] The third braking assembly is connected to the brake disc and is configured to apply a third braking force to the brake disc when the first drive unit is de-energized.

[0019] In one feasible implementation, the third braking component includes:

[0020] A clamping device used for hinged to the bed of a CNC spiral bevel gear machine tool;

[0021] The optical axis has one end hinged to the brake disc and slides through the clamp, so that the distance between the end of the optical axis hinged to the brake disc and the hinge point between the clamp and the bed can be adjusted.

[0022] The clamp is configured to restrict the sliding of the optical axis when the first drive unit is de-energized.

[0023] In one feasible implementation, the CNC rotary table for a CNC spiral bevel gear machine tool further includes:

[0024] An angle encoder is installed on the first rotating component to detect angular displacement information of the first rotating shaft.

[0025] In one feasible implementation, the CNC rotary table for a CNC spiral bevel gear machine tool further includes:

[0026] The control component, angle encoder, first braking component and second braking component are all signal connected to the control component. The control component is configured to control the first braking component and the second braking component to apply braking force to the first rotating shaft when the angular displacement information of the first rotating shaft reaches the target angular displacement.

[0027] A second aspect of the present disclosure provides a CNC spiral bevel gear machine tool, comprising:

[0028] CNC rotary table for CNC spiral bevel gear machine tools, as proposed in any of the first aspects above.

[0029] The above description is merely an overview of the technical solution provided in this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other features and effects of this disclosure more obvious and understandable, the following are specific examples of the implementation methods of this disclosure. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 This is a schematic structural diagram of a CNC rotary table for a CNC spiral bevel gear machine tool according to an embodiment of the present disclosure;

[0032] Figure 2 This is a schematic partial cross-sectional view of a CNC rotary table for a CNC spiral bevel gear machine tool according to an embodiment of the present disclosure;

[0033] Figure 3 for Figure 2 A schematic enlarged view of a portion of region E in the middle;

[0034] Figure 4 A schematic structural diagram of a second braking assembly according to an embodiment of this disclosure;

[0035] Figure 5 A schematic structural diagram of a third braking assembly according to an embodiment of this disclosure;

[0036] Figure 6 This is a schematic installation scenario diagram of a CNC rotary table for a CNC spiral bevel gear machine tool according to an embodiment of this disclosure;

[0037] Figure 7 This is a schematic application scenario diagram of a CNC rotary table for a CNC spiral bevel gear machine tool according to an embodiment of the present disclosure;

[0038] Figure 8 This is a schematic structural diagram of a CNC spiral bevel gear machine tool according to an embodiment of the present disclosure.

[0039] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0040] 100. CNC rotary table for CNC spiral bevel gear machine tool; 200. Column; 300. X-axis guide rail; 400. X-axis slide; 500. Y-axis guide rail; 600. Y-axis slide; 700. Tool box;

[0041] 110. First rotating assembly; 111. First drive unit; 111a. Rotor; 111b. Stator; 111c. Housing; 112. First rotating shaft; 112a. First shaft section; 112b. Second shaft section; 112c. Brake disc; 113. First bearing; 114. Second bearing;

[0042] 120. Second rotating assembly; 121. Second rotating shaft;

[0043] 130. First braking assembly; 131. Brake ring; 132. Reset component;

[0044] 140. Second braking assembly; 141. Double-acting cylinder; 142. First connecting seat; 143. First pin; 144. Cylinder seat; 145. Second connecting seat; 146. Second pin; 147. First single elbow joint;

[0045] 150. Third braking assembly; 151. Clamping device; 152. Optical axis; 153. Third connecting seat; 154. Second single elbow joint; 155. Swing block; 156. Fixing plate; 157. Third pin; 158. Bearing with seat; 159. Fixing seat;

[0046] 160. Angle encoder;

[0047] 1111, mating wall; 1311, braking wall. Detailed Implementation

[0048] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0049] like Figures 1 to 8As shown, according to a first aspect of the present disclosure, a CNC rotary table 100 for a CNC spiral bevel gear machine tool is provided, comprising: a first rotating assembly 110, including a first driving part 111 and a first rotating shaft part 112, the first driving part 111 being connected to the first rotating shaft part 112 and used to drive the first rotating shaft part 112 to rotate, the axis of the first rotating shaft part 112 extending along a first direction; a second rotating assembly 120 disposed at one end of the first rotating shaft part 112, the second rotating assembly 120 being used to connect to a workpiece to be processed and used to drive the workpiece to be processed to rotate about a second direction, the second direction being perpendicular to the first direction; a first braking assembly 130 disposed in the first rotating assembly 110, used to apply a first braking force to a first axial position of the first rotating shaft part 112; and a second braking assembly 140 disposed in the first rotating assembly 110, used to apply a second braking force to a second axial position of the first rotating shaft part 112, the second axial position being spaced apart from the first axial position along the first direction.

[0050] The CNC rotary table 100 for a CNC spiral bevel gear machine tool provided in this embodiment includes the aforementioned first rotating assembly 110, second rotating assembly 120, first braking assembly 130, and second braking assembly 140. The first rotating assembly 110 includes a first driving part 111 and a first rotating shaft part 112. The axis of the first rotating shaft part 112 extends along a first direction. The first driving part 111 drives the first rotating shaft part 112 to rotate around its own axis. The second rotating assembly 120 is disposed at one end of the first rotating shaft part 112 and is used to connect to the workpiece to be processed. Thus, during the process of the first driving part 111 driving the first rotating shaft part 112 to rotate, the first rotating shaft part 112 can drive the second rotating assembly 120 and the workpiece to be processed to synchronously generate angular displacement around the aforementioned first direction, so as to adjust the posture of the workpiece to be processed. The second rotating assembly 120 is used to drive the workpiece to be processed... The workpiece rotates about a second direction, thereby causing the workpiece to rotate relative to the cutting tool during use, facilitating cutting by the cutting tool. The second direction is perpendicular to the first direction, allowing for the machining of helical bevel teeth on the workpiece when the first rotating assembly 110 and the second rotating assembly 120 are linked. The first braking assembly 130 and the second braking assembly 140 are both mounted on the first rotating assembly 110 and are used to apply a first braking force and a second braking force to the first rotating shaft 112, respectively, thereby driving the first rotating shaft 112 to rotate to the target angle. After reaching the desired position, the aforementioned CNC rotary table 100 can use the first braking assembly 130 and the second braking assembly 140 to brake the first rotating shaft portion 112, thereby restricting the rotational freedom of the first rotating shaft portion 112 and preventing the first rotating shaft portion 112 from deflecting around the first direction under the force applied by the second rotating assembly 120. Furthermore, the cooperation between the first braking assembly 130 and the second braking assembly 140 can reduce the load independently borne by the first braking assembly 130 and the second braking assembly 140 during braking, thereby reducing the risk of damage to the first braking assembly 130 and the second braking assembly 140 and extending their service life. The service life of component 140; and the positions where the first braking component 130 and the second braking component 140 apply braking force to the first rotating shaft portion 112 are respectively at the first axial position and the second axial position. The aforementioned first axial position and the second axial position are two different positions in the axial direction of the first rotating shaft portion 112, thereby improving the overall rigidity of the aforementioned CNC rotary table 100 during braking, reducing the risk of deformation of the first rotating shaft portion 112 and the probability of large-scale chatter of the CNC rotary table, and improving the braking stability of the first rotating shaft portion 112, improving the positional stability of the workpiece to be processed during the processing, which is conducive to ensuring the processing quality of the workpiece to be processed.

[0051] It should be noted that, in practical applications, the CNC rotary table 100 for a CNC spiral bevel gear machine tool provided in this embodiment can be used as a device of a CNC machine tool or installed on a CNC machine tool. The aforementioned CNC machine tool can be, but is not limited to, a CNC spiral bevel gear machine tool for machining spiral bevel gears, and the aforementioned CNC machine tool can be a vertical machine tool or a horizontal machine tool. For example... Figure 8 As shown, the aforementioned CNC spiral bevel gear machine tool may include a bed, an X-axis guide rail 300, an X-axis slide 400, a Y-axis guide rail 500, a Y-axis slide 600, and a tool box 700. Figure 8 The directions X, Y, and Z are used to schematically represent the X-axis, Y-axis, and Z-axis directions of the aforementioned CNC spiral bevel gear machine tool, respectively. The Z-axis direction can be the height direction of the aforementioned bed. The X-axis and Y-axis directions can be two mutually perpendicular horizontal directions, and the X-axis, Y-axis, and Z-axis directions are mutually perpendicular. The X-axis guide rail 300 is disposed at the top of the column 200 of the aforementioned bed and extends along the X-axis direction. The X-axis slide 400 is slidably disposed on the X-axis guide rail 300. The Y-axis guide rail 500 is disposed at the top of the X-axis slide 400. The slide 600 is slidably mounted on the Y-axis guide rail 500. The tool box 700 is mounted on the Y-axis slide 600 and is adapted to slide relative to the Y-axis slide 600 along the Z-axis direction. Thus, the tool box 700 has translational freedom along a direction parallel to the X-axis, Y-axis, or Z-axis. The bottom end of the tool box 700 may be provided with a tool spindle for mounting machining tools. The axial direction of the tool spindle can be regarded as the C-axis direction of the machine tool. The C-axis direction is parallel to the Z-axis direction, and the tool spindle can drive the machining tools to rotate around the C-axis, thereby facilitating the cutting of the workpiece by the machining tools.

[0052] like Figures 6 to 8 As shown, Figure 6Centerline B and centerline A are used to schematically represent the aforementioned first direction and the aforementioned second direction, respectively. Taking the aforementioned CNC rotary table 100 as a device of a CNC spiral bevel gear machine tool as an example, the first rotating shaft portion 112 of the aforementioned CNC rotary table 100 is rotatably mounted on the aforementioned column 200. The aforementioned first direction can be arranged parallel to the aforementioned Y-axis direction, that is, the first rotating shaft portion 112 extends horizontally. Thus, when the first drive unit 111 drives the first rotating shaft portion 112 to rotate, it can drive the second rotating assembly 120 and the workpiece to be processed connected to the second rotating assembly 120 to rotate around the horizontal direction. For example, the aforementioned first drive unit 111 can drive the first rotating shaft portion 112 to rotate around the aforementioned first direction between a first angular position and a second angular position. When the first rotating shaft 112 is parallel to the Z-axis direction, the angle position of the first rotating shaft 112 is 0°. The first and second angle positions can be +95° and -95° respectively, that is, the first driving unit 111 can drive the first rotating shaft 112 to rotate within the range of ±95°. The second rotating assembly 120 can be arranged below the tool box 700 along the Z-axis direction. The second rotating assembly 120 can have a workpiece driving unit and a second rotating shaft 121. The workpiece driving unit is used to drive the second rotating shaft 121 to rotate around the second direction, and one end of the second rotating shaft 121 is used to connect the workpiece to be processed. When the first rotating shaft 112 is at the 0° position, the workpiece to be processed is located at the upper end of the second rotating shaft 121.Therefore, based on the aforementioned configuration, the CNC rotary table 100 for a CNC spiral bevel gear machine tool provided in this embodiment can, on the one hand, adjust the posture of the workpiece relative to the aforementioned machining tool using the first rotating assembly 110 and the second rotating assembly 120, thereby enabling complex cutting actions in conjunction with the position adjustment of the machining tool, facilitating the machining of spiral bevel gears, such as spiral bevel gears with shaft angles ranging from -5° to 95°; on the other hand, after the first driving unit 111 drives the first rotating shaft 112 to rotate to the target angle position, the aforementioned CNC rotary table 100 can brake the first rotating shaft 112 using the first braking assembly 130 and the second braking assembly 140, thereby restricting the rotational freedom of the first rotating shaft 112, reducing the probability of the first rotating shaft 112 deflecting around the first direction under the gravity of the second rotating assembly 120 and the workpiece and / or the cutting force applied by the machining tool, and the first braking assembly 130 and the second braking assembly 140... The coordinated operation of the first braking assembly 130 and the second braking assembly 140 can reduce the load borne independently by the first braking assembly 130 and the second braking assembly 140 during braking, thereby reducing the risk of damage to the first braking assembly 130 and the second braking assembly 140 and extending their service life. Furthermore, the first braking assembly 130 and the second braking assembly 140 apply braking force to the first rotating shaft 112 at the first axial position and the second axial position, respectively. The first axial position and the second axial position are two different positions on the axial direction of the first rotating shaft 112, which can improve the overall rigidity of the CNC rotary table 100 during braking, reduce the risk of deformation of the first rotating shaft 112 and the probability of large-scale chatter of the CNC rotary table, and improve the braking stability of the first rotating shaft 112, thereby improving the positional stability of the workpiece during processing, which is conducive to ensuring the processing quality of the workpiece and is suitable for processing high-precision parts such as aerospace parts.

[0053] It is understood that the aforementioned first direction and the aforementioned second direction are coplanar and perpendicular. In practical applications, the aforementioned first direction and the aforementioned second direction can be used as the B-axis direction and A-axis direction of the aforementioned CNC spiral bevel gear machine tool, respectively. Correspondingly, when the aforementioned C-axis coincides with the aforementioned A-axis, the intersection of the aforementioned A-axis and B-axis can be used as the O-point position of the four-axis travel of the aforementioned CNC spiral bevel gear machine tool's X-axis, Y-axis, Z-axis and C-axis, and the positive and negative directions of movement of the aforementioned X-axis, Y-axis, Z-axis, A-axis, B-axis and C-axis can be defined.

[0054] It is understandable that, in practical applications, the aforementioned machining tools can be, but are not limited to, milling cutters, grinding wheels, etc., and correspondingly, the aforementioned CNC rotary table 100 can be used for milling or grinding.

[0055] It is understood that, in practical applications, the aforementioned first drive unit 111, workpiece drive unit, first braking assembly 130, and second braking assembly 140 can all be signal-connected to the control system of the aforementioned CNC spiral bevel gear machine tool, so that the operation can be controlled by the aforementioned control system. Accordingly, the aforementioned control system can control the motion parameters of the aforementioned first drive unit 111 and workpiece drive unit to coordinate with the motion of the aforementioned machining tool to achieve machining of different tooth profiles. For example, in practical applications, the aforementioned CNC spiral bevel gear machine tool can also be used to machine high-precision gear parts such as hypoid gears and aerospace end gear disks. The aforementioned control system can also control the braking timing of the first braking assembly 130 and the second braking assembly 140. For example, the first braking assembly 130 and the second braking assembly 140 can be controlled to apply braking force to the first rotating shaft 112 when the first rotating shaft 112 rotates to the target angular position or the angular displacement reaches the target angular displacement. Alternatively, the first rotating shaft 112 can be braked under conditions such as long-term static holding or high dynamic load cycling of the corresponding machine tool. The specific control methods for the first drive unit 111, the workpiece drive unit, the first braking assembly 130, and the second braking assembly 140 can be set according to actual needs, and will not be limited or explained in detail here.

[0056] It is understood that the aforementioned first drive unit 111 can be a torque motor, and the aforementioned first rotating shaft 112 is fixedly connected to the rotor 111a of the aforementioned torque motor. Thus, the first rotating shaft 112 can be directly driven by the aforementioned torque motor, which helps reduce transmission losses between the first drive unit 111 and the first rotating shaft 112, improving transmission efficiency and response speed. Furthermore, based on the aforementioned first braking assembly 130 and second braking assembly 140, it helps reduce the energy consumption of the torque motor in the hovering state and shorten the operating time of the torque motor. The aforementioned torque motor may also include a stator 111b and a housing 111c. The housing can be fixedly mounted on the aforementioned column 200, and the stator 111b is fixedly mounted on the housing 111c and arranged around the aforementioned rotor 111a. The rotor 111a can rotate relative to the aforementioned stator 111b.

[0057] It is understood that the aforementioned workpiece drive unit may include a motor connected to the second rotating shaft unit 121.

[0058] It is understood that, in practical applications, the aforementioned first rotating shaft portion 112 can be fitted with a bearing, so that the first rotating shaft portion 112 can be rotatably mounted on the aforementioned column 200 through the bearing. The number of the aforementioned bearings can be multiple. For example, the multiple aforementioned bearings may include a first bearing 113 and a second bearing 114. Along the aforementioned first direction, the first bearing 113 is arranged between the aforementioned first braking position and the aforementioned second rotating assembly 120, and the aforementioned second bearing 114 is arranged between the aforementioned second braking position and the aforementioned first braking position. The aforementioned first bearing 113 can be a turntable bearing, thereby ensuring the load-bearing performance of the first bearing 113. The second bearing 114 can be, but is not limited to, a tapered bore cylindrical roller bearing. Based on the aforementioned arrangement, a large span support for the first rotating shaft portion 112 can be achieved, which is beneficial to shorten the overhang of the first rotating shaft portion 112, improve the stability and rigidity of the first rotating shaft portion 112, and enhance the overall bending stiffness and load-bearing capacity of the first rotating assembly 110.

[0059] It is understood that the braking methods of the aforementioned first braking component 130 and the aforementioned second braking component 140 may be the same or different.

[0060] like Figure 1 and Figure 2 As shown, in some feasible examples, the end of the second rotating shaft 121 used to connect to the workpiece to be processed is flush with the axis of the first rotating shaft 112, or there is a gap between the end of the second rotating shaft 121 used to connect to the workpiece to be processed and the axis of the first rotating shaft 112, thereby increasing the gap between the end of the second rotating shaft 121 used to connect to the workpiece to be processed and the machining tool, which facilitates the arrangement of a large workpiece to be processed, machining tool or fixture and other machining tools between the second rotating assembly 120 and the tool box 700.

[0061] like Figure 2 As shown, in some feasible examples, the aforementioned first rotating shaft 112 can be a hollow shaft, which facilitates the installation of cables and pipes in practical applications and makes it easier to connect the second rotating assembly 120.

[0062] like Figure 2 and Figure 3As shown, in some examples, the first rotating shaft 112 includes a first shaft segment 112a, a second shaft segment 112b, and a brake disc 112c. The second shaft segment 112b is connected between the first shaft segment 112a and the brake disc 112c. The first shaft segment 112a, the second shaft segment 112b, and the brake disc 112c are arranged coaxially. The second rotating assembly 120 is connected to the end of the first shaft segment 112a away from the second shaft segment 112b. The first shaft segment 112a is connected to the first driving unit 111. The first braking assembly 130 is used to apply a first braking force to the first shaft segment 112a, and the second braking assembly 140 is used to apply a second braking force to the brake disc 112c.

[0063] In this technical solution, the aforementioned first rotating shaft portion 112 may include the aforementioned first shaft segment 112a, second shaft segment 112b, and brake disc 112c. Based on the aforementioned configuration, on the one hand, the axial length of the first rotating shaft portion 112 can be extended, thereby facilitating multi-point support of the first rotating shaft portion 112 in practical applications, which is beneficial to improving the rigidity of the first rotating assembly 110 and facilitating the installation of hub-type parts on the first rotating shaft portion 112; on the other hand, the first braking assembly 130 and the second braking assembly 140 can respectively apply braking force to the aforementioned first shaft segment 112a and brake disc 112c, thereby forming an axial difference in braking position, which can improve the overall rigidity of the aforementioned CNC rotary table 100 during braking, reduce the risk of deformation of the first rotating shaft portion 112 and the probability of large-scale chatter of the CNC rotary table, and improve the braking stability of the first rotating shaft portion 112, improve the positional stability of the workpiece to be processed during processing, which is beneficial to ensuring the processing quality of the workpiece to be processed.

[0064] It is understood that in practical applications, the first shaft segment 112a and the second shaft segment 112b can be inserted through the aforementioned column 200, and the end of the second shaft segment 112b away from the first shaft segment 112a can be located outside the column 200, so that the brake disc 112c is located outside the aforementioned column 200, thereby facilitating the connection of the second brake assembly 140 to the brake disc 112c.

[0065] It is understandable that, in practical applications, the rotor 111a of the aforementioned torque motor can be sleeved on the aforementioned second shaft segment 112b, and one end of the rotor 111a is fixedly connected to the end of the first shaft segment 112a away from the second rotating assembly 120.

[0066] like Figure 3As shown, in some examples, the first braking assembly 130 includes: a brake ring 131 movably fitted onto the first shaft segment 112a, with a brake wall 1311 formed at one end of the brake ring 131; a housing 111c of the first drive unit 111 having a mating wall 1111 arranged opposite to the brake wall 1311, the brake wall 1311 being used to abut against the mating wall 1111 to apply a first braking force to the mating wall 1111; and a second drive unit for driving the brake ring 131 to move along a first direction so that the brake wall 1311 abuts against or separates from the mating wall 1111.

[0067] In this technical solution, the first braking assembly 130 may include the aforementioned brake ring 131 and a second driving unit. Based on the aforementioned configuration, the first braking assembly 130 can use the second driving unit to drive the brake ring 131 to move along a first direction, so that the brake wall 1311 of the brake ring 131 abuts against or separates from the mating wall 1111. Thus, when the brake wall 1311 abuts against the mating wall 1111, frictional force can be applied between the brake ring 131 and the aforementioned housing 111c. Correspondingly, under the frictional force applied by the housing 111c, the brake ring 131 can further apply friction to the first shaft segment. Applying the aforementioned first braking force to brake the first shaft segment 112a helps to ensure the positional stability of the first rotating shaft portion 112. When the brake wall 1311 is separated from the aforementioned mating wall 1111, the first braking assembly 130 can release the brake on the first rotating shaft portion 112, thereby facilitating the rotation of the first rotating shaft portion 112 under the drive of the first drive unit 111. Furthermore, based on the aforementioned configuration, the cost of using the first braking assembly 130 can be reduced, and the structural compactness of the aforementioned CNC rotary table 100 can be improved.

[0068] It should be noted that, Figure 3 The second driving unit is not shown in the diagram. In practical applications, the specific form of the second driving unit can be set according to actual needs. It can drive the brake ring 131 to move along the first direction so that the brake wall 1311 abuts against or separates from the mating wall 1111. For example, the second driving unit may include a hydraulic driving device. A hydraulic oil circuit can be defined between the first shaft segment 112a and the brake ring 131. The hydraulic driving device is used to supply hydraulic oil into the hydraulic oil circuit or to draw out the hydraulic oil in the hydraulic oil circuit, thereby driving the brake ring 131 to move along the first direction. Correspondingly, the brake ring 131 and the first shaft segment 112a can be sealed to prevent oil leakage in the hydraulic oil circuit.

[0069] It is understandable that in practical applications, the brake ring 131 is adapted to slide along the axial direction of the first shaft segment 112a, and the brake ring 131 and the first shaft segment 112a are circumferentially limited to each other, that is, the brake ring 131 can rotate synchronously with the first shaft segment 112a, and can slide relative to the first shaft segment 112a in the first direction. Correspondingly, the first drive unit 111 can be the aforementioned torque motor, and the housing 111c of the first drive unit 111 is also the housing 111c of the torque motor. The housing 111c can be fixedly mounted on the aforementioned column 200, so that the housing 111c can be in a relatively stationary state. When the aforementioned brake ring 131 moves along the first direction, the aforementioned brake wall 1311 can approach or move away from the aforementioned mating wall 1111. When the aforementioned brake wall 1311 and the aforementioned mating wall 1111 abut against each other, the brake ring 131 can apply the aforementioned first braking force to the first shaft segment under the frictional force of the mating wall 1111. Under the action of the aforementioned first braking force, the operating energy consumption of the torque motor under the suspended turntable can also be saved, which is conducive to shortening the working time of the torque motor.

[0070] It is understood that the aforementioned first shaft segment 112a can be a stepped shaft, and the aforementioned brake ring 131 can correspond to the stepped structure arrangement of the aforementioned first shaft segment 112a.

[0071] For example, the brake ring 131 may be arranged along the first direction on the side of the aforementioned housing 111c facing the second rotating assembly 120.

[0072] For example, the aforementioned brake ring 131 may be made of steel.

[0073] like Figure 3 As shown, in some examples, the first braking assembly 130 further includes a reset member 132 connected between the brake ring 131 and the first shaft segment 112a, the reset member 132 being used to apply a reset force away from the mating wall 1111 to the brake ring 131 in a first direction.

[0074] In this technical solution, the first braking assembly 130 may further include the aforementioned reset member 132. Based on the aforementioned configuration, the reset force applied by the reset member 132 to the brake ring 131 can cause the brake wall 1311 of the brake ring 131 to separate from the aforementioned mating wall 1111. Thus, when it is necessary to release the brake on the first rotating shaft portion 112, the reset member 132 can save the driving energy consumption of the second driving unit on the brake ring 131, and facilitate the rapid release of the brake on the first rotating shaft portion 112 by the first braking assembly 130, thereby improving the unlocking efficiency of the first rotating shaft portion 112.

[0075] For example, the aforementioned reset member 132 can be an annular spring sheet, which is sleeved on the aforementioned first shaft segment 112a and fixedly connected between the first shaft segment 112a and the brake ring 131. This helps to ensure the uniformity of the force applied by the reset member 132 to the brake ring 131 and helps to avoid the brake ring 131 from deflecting and getting stuck.

[0076] like Figure 1 and Figure 4 As shown, in some examples, the second braking assembly 140 includes a double-acting cylinder 141, one end of which is hinged to the brake disc 112c on the side opposite to the second shaft segment 112b in the extension direction, and the other end is hinged to the bed of the CNC spiral bevel gear machine tool.

[0077] In this technical solution, the second braking assembly 140 may include the aforementioned double-acting cylinder 141. Based on the aforementioned configuration, when it is necessary to release the braking of the first rotating shaft portion 112 by the second braking assembly 140, the aforementioned double-acting cylinder 141 can be in a depressurized state, so that when the brake disc 112c rotates, it can drive the double-acting cylinder 141 to extend, retract, and deflect, which helps to ensure the rotational freedom of the first rotating shaft portion 112. Correspondingly, when it is necessary for the second braking assembly 140 to apply the aforementioned second braking force to the first rotating shaft portion 112, pressurized gas can be injected into the double-acting cylinder 141 to increase the resistance when the brake disc 112c drives the double-acting cylinder 141 to extend and retract, thereby achieving braking of the first rotating shaft portion 112, which helps to improve the braking stability of the first rotating shaft portion 112. Furthermore, the double-acting cylinder 141 has high load-bearing capacity and cleanliness, which facilitates the application of a large braking force to the first rotating shaft portion 112 and helps to reduce the maintenance cost of the second braking assembly 140.

[0078] Understandably, in practical applications, one end of the double-acting cylinder 141 can be hinged to one side of the aforementioned column 200.

[0079] Understandably, in practical applications, the pressure of the pressurized gas charged into the double-acting cylinder 141 can be set according to the actual working conditions, and no further restrictions are imposed here.

[0080] Understandably, in practical applications, the double-acting cylinder 141 can be connected to an air source. Correspondingly, by controlling the operation of the air source, the double-acting cylinder 141 can be switched between inflation and depressurization, and the internal pressure of the double-acting cylinder 141 can be adjusted to adjust the magnitude of the second braking force. When the aforementioned first drive unit 111 is the aforementioned torque motor, the aforementioned second braking force can reduce the energy consumption of the torque motor when hovering, which is beneficial to shortening the running time of the torque motor.

[0081] For example, the aforementioned double-acting cylinder 141 can be a single-rod double-acting cylinder 141.

[0082] For example, such as Figure 4 As shown, the second braking assembly 140 may further include a first connecting seat 142, a first pin 143, a cylinder seat 144, a second connecting seat 145, a second pin 146, and a first single-elbow joint 147. The first single-elbow joint 147 is threadedly connected to one end of the piston rod of the double-acting cylinder 141. The other end of the first single-elbow joint 147 is hinged to the second connecting seat 145 via the second pin 146. The second connecting seat 145 is fixedly disposed on the side of the aforementioned brake disc 112c opposite to the aforementioned second shaft segment 112b. The end of the double-acting cylinder 141 opposite to the piston rod is hinged to the first connecting seat 142 via the first pin 143. The first connecting seat 142 is fixedly disposed on the cylinder seat 144, which is used to fix the cylinder to the aforementioned column 200. It is understood that the axes of the aforementioned first pin 143 and the aforementioned second pin 146 are both parallel to the aforementioned first direction.

[0083] like Figure 1 As shown, in some examples, the CNC rotary table 100 for a CNC spiral bevel gear machine tool further includes: a third braking assembly 150 connected to a brake disc 112c, wherein the first drive unit 111 is configured to apply a third braking force to the brake disc 112c when the first drive unit 111 is de-energized.

[0084] In this technical solution, the aforementioned CNC rotary table 100 may further include the aforementioned third braking assembly 150. Based on the aforementioned configuration, in the event of a power outage or power failure in the first drive unit 111, the aforementioned CNC rotary table 100 can use the aforementioned third braking assembly 150 to perform emergency braking on the aforementioned first rotating shaft 112, thereby preventing the first rotating shaft 112 from deflecting under external force, which helps to prevent the workpiece to be processed from falling and avoids damage to the processing tool and the workpiece to be processed.

[0085] For example, the aforementioned third braking component 150 can be a normally open braking device. That is, when the third braking component 150 is energized, it releases the rotation restriction on the brake disc 112c; when the third braking component 150 is de-energized, it can apply the aforementioned third braking force to the brake disc 112c. Correspondingly, the third braking component 150 and the first drive unit 111 can be powered by the same power source. For example, both the third braking component 150 and the first drive unit 111 can be connected to the power supply system of the aforementioned CNC spiral bevel gear machine tool, so that when the power supply system is de-energized or interrupted, the third braking component 150 can quickly brake the brake disc 112c. It is understood that in practical applications, there are various ways to configure the third braking component 150 to apply the third braking force to the brake disc 112c when the first drive unit 111 is de-energized, and it is not limited to the aforementioned example.

[0086] like Figure 1 and Figure 5 As shown, in some examples, the third braking assembly 150 includes: a clamp 151 for hinged to the bed of a CNC spiral bevel gear machine tool; an optical shaft 152, one end of which is hinged to a brake disc 112c, and the optical shaft 152 slidably passes through the clamp 151, such that the distance between the end of the optical shaft 152 hinged to the brake disc 112c and the hinge point between the clamp 151 and the bed is adjustable; wherein the clamp 151 is configured to restrict the sliding of the optical shaft 152 when the first drive unit 111 is de-energized.

[0087] In this technical solution, the third braking assembly 150 may include the aforementioned clamp 151 and the aforementioned optical shaft 152. Based on the aforementioned configuration, when it is necessary to release the braking of the first rotating shaft portion 112 by the third braking assembly 150, the aforementioned clamp 151 can release the sliding restriction on the optical shaft 152, so that when the brake disc 112c rotates, it can drive the optical shaft 152 to slide and extend relative to the clamp 151, and cause the optical shaft 152 and the clamp 151 to deflect, which is beneficial to ensuring the rotational freedom of the first rotating shaft portion 112; correspondingly, when it is necessary for the third braking assembly 150 to apply the aforementioned third braking force to the brake disc 112c, the clamp 151 can restrict the sliding of the aforementioned optical shaft 152, so as to increase the resistance when the brake disc 112c drives the optical shaft 152 to slide and extend, thereby realizing the braking of the first rotating shaft portion 112, which is beneficial to improving the braking stability of the first rotating shaft portion 112.

[0088] It is understandable that, in practical applications, the aforementioned clamp 151 can be hinged to one side of the aforementioned column 200.

[0089] For example, the aforementioned clamp 151 can be a normally open clamp 151, and the aforementioned clamp 151 and the aforementioned first drive unit 111 can be powered by the same power source, for example, both can be powered by the power supply system of the aforementioned CNC spiral bevel gear machine tool. Thus, in the event of a power outage or power failure of the aforementioned power supply system, the clamp 151 can quickly brake the optical axis 152, thereby applying the aforementioned third braking force to the aforementioned brake disc 112c. It is understood that in practical applications, there are various ways to configure the clamp 151 to restrict the sliding of the optical axis 152 when the first drive unit 111 is de-energized, and these are not limited to the aforementioned example.

[0090] For example, such as Figure 5As shown, the aforementioned third braking assembly 150 may further include a third connecting seat 153, a second single elbow joint 154, a swing block 155, a fixing plate 156, a third pin 157, a seated bearing 158, and a fixing seat 159; wherein, the second single elbow joint 154 is threaded to one end of the aforementioned optical shaft 152, and the other end of the second single elbow joint 154 is hinged to the aforementioned third connecting seat 153 through the aforementioned third pin 157. The third connecting seat 153 is fixedly disposed on the side of the brake disc 112c away from the second shaft segment 112b. The clamp 151 is provided with the aforementioned swing block 155 at the end opposite to the second single elbow joint 154. The swing block 155 forms a pin structure. The inner ring of the seated bearing 158 is sleeved on the aforementioned pin structure, and the seated bearing 158 is fixedly disposed on the fixing seat 159. The fixing seat 159 is connected to the aforementioned fixing plate 156, and the fixing plate 156 is fixedly disposed on the aforementioned column 200. It is understood that the axes of the aforementioned third pin 157 and the aforementioned bearing 158 are both parallel to the aforementioned first direction.

[0091] In some feasible examples, the aforementioned third connecting seat 153 and the aforementioned second connecting seat 145 are arranged symmetrically about the axis of the brake disc 112c.

[0092] like Figure 3 As shown, in some examples, the CNC rotary table 100 for CNC spiral bevel gear machine tools also includes: an angle encoder 160, disposed on the first rotating assembly 110, for detecting angular displacement information of the first rotating shaft 112.

[0093] In this technical solution, the CNC rotary table 100 for the CNC spiral bevel gear machine tool may further include the aforementioned angle encoder 160. Based on the aforementioned configuration, the CNC rotary table can utilize the aforementioned angle encoder 160 to collect the angular displacement of the aforementioned first rotating shaft 112 in real time, thereby facilitating precise control of the rotation amount of the first rotating shaft 112 and ensuring the processing quality of the workpiece to be processed.

[0094] For example, the aforementioned angle encoder 160 may be, but is not limited to, an absolute high-precision grating.

[0095] For example, the aforementioned angle encoder 160 and the aforementioned first drive unit 111 can both be connected to the control system of the CNC spiral bevel gear machine tool in practical applications. The aforementioned control system can control the operation of the first drive unit 111 according to the aforementioned angular displacement information. For example, it can implement closed-loop control of the first drive unit 111 according to the aforementioned angular displacement information, thereby improving the angular displacement accuracy of the first rotating shaft 112.

[0096] In some examples, the CNC rotary table 100 for a CNC spiral bevel gear machine tool also includes:

[0097] The control component, angle encoder 160, first braking component 130 and second braking component 140 are all signal connected to the control component. The control component is configured to control the first braking component 130 and the second braking component 140 to apply braking force to the first rotating shaft 112 when the angular displacement information of the first rotating shaft 112 reaches the target angular displacement.

[0098] In this technical solution, the CNC rotary table 100 for a CNC spiral bevel gear machine tool may further include the aforementioned control components. Based on the aforementioned configuration, the CNC rotary table 100 for a CNC spiral bevel gear machine tool can automatically control the activation of the first braking component 130 and the second braking component 140 by the control components when the angular displacement information of the first rotating shaft 112 reaches the target angular displacement, thereby braking the first rotating shaft 112. This ensures the angular position accuracy and stability of the first rotating shaft 112, which is beneficial to ensuring the machining quality of the workpiece.

[0099] It is understood that the angular displacement information of the first rotating shaft 112 reaching the target angular displacement means reaching it within a certain error range. The aforementioned error range can be set according to, but is not limited to, the measurement accuracy of the angle encoder 160. For example, the aforementioned error range can be, but is not limited to, less than or equal to 5″, 10″, or 15″.

[0100] like Figure 8 As shown, a second aspect of the present disclosure provides a CNC spiral bevel gear machine tool, comprising: a CNC rotary table 100 for a CNC spiral bevel gear machine tool as described in any of the first aspects above.

[0101] The CNC spiral bevel gear machine tool provided in this embodiment includes a CNC rotary table 100 for a CNC spiral bevel gear machine tool as proposed in any of the first aspects above, and may further include a bed, an X-axis guide rail 300, an X-axis slide 400, a Y-axis guide rail 500, a Y-axis slide 600, and a tool box 700. Figure 8The directions X, Y, and Z are used to schematically represent the X-axis, Y-axis, and Z-axis directions of the aforementioned CNC spiral bevel gear machine tool, respectively. The Z-axis direction can be the height direction of the aforementioned bed. The X-axis and Y-axis directions can be two mutually perpendicular horizontal directions, and the X-axis, Y-axis, and Z-axis directions are mutually perpendicular. The X-axis guide rail 300 is disposed at the top of the column 200 of the aforementioned bed and extends along the X-axis direction. The X-axis slide 400 is slidably disposed on the X-axis guide rail 300. The Y-axis guide rail 500 is disposed at the top of the X-axis slide 400. The slide 600 is slidably mounted on the Y-axis guide rail 500. The tool box 700 is mounted on the Y-axis slide 600 and is adapted to slide relative to the Y-axis slide 600 along the Z-axis direction. Thus, the tool box 700 has translational freedom along a direction parallel to the X-axis, Y-axis, or Z-axis. The bottom end of the tool box 700 may be provided with a tool spindle for mounting machining tools. The axial direction of the tool spindle can be regarded as the C-axis direction of the machine tool. The C-axis direction is parallel to the Z-axis direction, and the tool spindle can drive the machining tools to rotate around the C-axis, thereby facilitating the cutting of the workpiece by the machining tools.

[0102] The CNC rotary table 100 for a CNC spiral bevel gear machine tool includes the aforementioned first rotating assembly 110, second rotating assembly 120, first braking assembly 130, and second braking assembly 140. The first rotating assembly 110 includes a first driving part 111 and a first rotating shaft part 112. The axis of the first rotating shaft part 112 extends along a first direction. The first driving part 111 drives the first rotating shaft part 112 to rotate around its own axis. The second rotating assembly 120 is disposed at one end of the first rotating shaft part 112 and is used to connect to the workpiece to be processed. Thus, during the rotation of the first rotating shaft part 112 driven by the first driving part 111, the first rotating shaft part 112 can drive the second rotating assembly 120 and the workpiece to be processed to synchronously generate angular displacement around the aforementioned first direction, facilitating the adjustment of the workpiece's posture. The second rotating assembly 120 is used to drive the workpiece to be processed... The workpiece rotates about a second direction, thereby causing the workpiece to rotate relative to the cutting tool during use, facilitating cutting by the cutting tool. The second direction is perpendicular to the first direction, allowing for the machining of helical bevel teeth on the workpiece when the first rotating assembly 110 and the second rotating assembly 120 are linked. The first braking assembly 130 and the second braking assembly 140 are both mounted on the first rotating assembly 110 and are used to apply a first braking force and a second braking force to the first rotating shaft 112, respectively, thereby driving the first rotating shaft 112 to rotate to the target angle. After reaching the desired position, the aforementioned CNC rotary table 100 can use the first braking assembly 130 and the second braking assembly 140 to brake the first rotating shaft portion 112, thereby restricting the rotational freedom of the first rotating shaft portion 112 and preventing the first rotating shaft portion 112 from deflecting around the first direction under the force applied by the second rotating assembly 120. Furthermore, the cooperation between the first braking assembly 130 and the second braking assembly 140 can reduce the load independently borne by the first braking assembly 130 and the second braking assembly 140 during braking, thereby reducing the risk of damage to the first braking assembly 130 and the second braking assembly 140 and extending their service life. The service life of component 140; and the positions where the first braking component 130 and the second braking component 140 apply braking force to the first rotating shaft portion 112 are respectively at the first axial position and the second axial position. The aforementioned first axial position and the second axial position are two different positions in the axial direction of the first rotating shaft portion 112, thereby improving the overall rigidity of the aforementioned CNC rotary table 100 during braking, reducing the risk of deformation of the first rotating shaft portion 112 and the probability of large-scale chatter of the CNC rotary table, and improving the braking stability of the first rotating shaft portion 112, improving the positional stability of the workpiece to be processed during the processing, which is conducive to ensuring the processing quality of the workpiece to be processed.

[0103] like Figures 6 to 8 As shown, Figure 6Centerline B and centerline A are used to schematically represent the aforementioned first direction and the aforementioned second direction, respectively. The first rotating shaft portion 112 of the aforementioned CNC rotary table 100 is rotatably mounted on the aforementioned column 200. The aforementioned first direction can be arranged parallel to the aforementioned Y-axis direction, that is, the first rotating shaft portion 112 extends horizontally. Thus, when the first driving unit 111 drives the first rotating shaft portion 112 to rotate, it can drive the second rotating assembly 120 and the workpiece to be processed connected to the second rotating assembly 120 to rotate around the horizontal direction. For example, the aforementioned first driving unit 111 can drive the first rotating shaft portion 112 to rotate around the aforementioned first direction between a first angular position and a second angular position, such as the first rotating shaft portion 112 being parallel to the aforementioned Z-axis in the aforementioned second direction. The angular position when the direction is 0° is the first angular position and the second angular position can be +95° and -95° respectively, that is, the first drive unit 111 can drive the first rotating shaft 112 to rotate within the range of ±95°; the second rotating assembly 120 can be arranged below the tool box 700 along the Z-axis direction. The second rotating assembly 120 can have a second drive unit and a second rotating shaft 121. The second drive unit is used to drive the second rotating shaft 121 to rotate around the second direction, and one end of the second rotating shaft 121 is used to connect the workpiece to be processed. When the first rotating shaft 112 is at the 0° position, the workpiece to be processed is located at the upper end of the second rotating shaft 121.

[0104] Therefore, the CNC spiral bevel gear machine tool provided in this embodiment, based on the aforementioned configuration, can, on the one hand, adjust the posture of the workpiece relative to the aforementioned machining tool using the first rotating assembly 110 and the second rotating assembly 120, thereby enabling the machining of spiral bevel gears with a high degree of complexity by coordinating with the position adjustment of the machining tool. For example, it can machine spiral bevel gears with shaft angles ranging from -5° to 95°. On the other hand, after the first drive unit 111 drives the first rotating shaft 112 to rotate to the target angle position, the aforementioned CNC rotary table 100 can brake the first rotating shaft 112 using the first braking assembly 130 and the second braking assembly 140, thereby restricting the rotational freedom of the first rotating shaft 112 and reducing the probability of the first rotating shaft 112 deflecting around the first direction under the gravity of the second rotating assembly 120 and the workpiece and / or the cutting force applied by the machining tool. Furthermore, the first braking assembly 130 and the second braking assembly 140 cooperate with each other. The combined braking system can reduce the load independently borne by the first braking assembly 130 and the second braking assembly 140 during braking, thereby reducing the risk of damage to the first braking assembly 130 and the second braking assembly 140 and extending their service life. Furthermore, the first braking assembly 130 and the second braking assembly 140 apply braking force to the first rotating shaft 112 at the first axial position and the second axial position, respectively. The first axial position and the second axial position are two different positions on the axial direction of the first rotating shaft 112. This can improve the overall rigidity of the CNC rotary table 100 during braking, reduce the risk of deformation of the first rotating shaft 112 and the probability of large-scale chatter of the CNC rotary table, and improve the braking stability of the first rotating shaft 112. This also improves the positional stability of the workpiece during processing, which is beneficial to ensuring the processing quality of the workpiece and is suitable for processing high-precision parts such as aerospace parts.

[0105] It is understood that the aforementioned first direction and the aforementioned second direction are coplanar and perpendicular. In practical applications, the aforementioned first direction and the aforementioned second direction can be used as the B-axis direction and A-axis direction of the aforementioned CNC spiral bevel gear machine tool, respectively. Correspondingly, when the aforementioned C-axis coincides with the aforementioned A-axis, the intersection of the aforementioned A-axis and B-axis can be used as the O-point position of the four-axis travel of the aforementioned CNC spiral bevel gear machine tool, and the positive and negative directions of the aforementioned four-axis motion are defined.

[0106] It is understandable that, in practical applications, the aforementioned machining tools can be, but are not limited to, milling cutters, grinding wheels, etc., and correspondingly, the aforementioned CNC rotary table 100 can be used for milling or grinding.

[0107] It is understood that, in practical applications, the aforementioned first drive unit 111, second drive unit, first braking assembly 130, and second braking assembly 140 can all be signal-connected to the control system of the aforementioned CNC spiral bevel gear machine tool, so that the operation can be controlled by the aforementioned control system. Accordingly, the aforementioned control system can control the motion parameters of the aforementioned first drive unit 111 and second drive unit to coordinate with the movement of the aforementioned machining tool to achieve machining of different tooth profiles. For example, in practical applications, the aforementioned CNC spiral bevel gear machine tool can also be used to machine high-precision gear parts such as hypoid gears and aerospace end gear disks. The aforementioned control system can also control the braking timing of the first braking assembly 130 and the second braking assembly 140. For example, the first braking assembly 130 and the second braking assembly 140 can be controlled to apply braking force to the first rotating shaft 112 when the first rotating shaft 112 rotates to the target angular position or the angular displacement reaches the target angular displacement. Alternatively, the first rotating shaft 112 can be braked under conditions such as long-term static holding or high dynamic load cycling of the corresponding machine tool. The specific control methods for the first drive unit 111, the second drive unit, the first braking assembly 130, and the second braking assembly 140 can be set according to actual needs, and will not be limited or explained in detail here.

[0108] It is understood that the aforementioned first drive unit 111 can be a torque motor, and the aforementioned first rotating shaft 112 is fixedly connected to the rotor 111a of the aforementioned torque motor. Thus, the first rotating shaft 112 can be directly driven by the aforementioned torque motor, which helps to reduce the transmission loss between the first drive unit 111 and the first rotating shaft 112, improve transmission efficiency and response speed, and based on the aforementioned first braking component 130 and second braking component 140, it helps to reduce the energy consumption of the torque motor in the hovering state and shorten the working time of the torque motor.

[0109] It is understood that, in practical applications, the aforementioned first rotating shaft portion 112 can be fitted with a bearing, so that the first rotating shaft portion 112 can be rotatably mounted on the aforementioned column 200 through the bearing. The number of the aforementioned bearings can be multiple. For example, the multiple aforementioned bearings may include a first bearing 113 and a second bearing 114. Along the aforementioned first direction, the first bearing 113 is arranged between the aforementioned first braking position and the aforementioned second rotating assembly 120, and the aforementioned second bearing 114 is arranged between the aforementioned second braking position and the aforementioned first braking position. The aforementioned first bearing 113 can be a turntable bearing, thereby ensuring the load-bearing performance of the first bearing 113. The second bearing 114 can be, but is not limited to, a tapered bore cylindrical roller bearing. Based on the aforementioned arrangement, a large span support for the first rotating shaft portion 112 can be achieved, which is beneficial to shorten the overhang of the first rotating shaft portion 112, improve the stability and rigidity of the first rotating shaft portion 112, and enhance the overall bending stiffness and load-bearing capacity of the first rotating assembly 110.

[0110] It is understood that the braking methods of the aforementioned first braking component 130 and the aforementioned second braking component 140 may be the same or different.

[0111] Furthermore, since the CNC spiral bevel gear machine tool provided in this embodiment includes a CNC rotary table 100 for a CNC spiral bevel gear machine tool as described in any of the first aspects above, it possesses all the beneficial effects of the aforementioned CNC rotary table 100, which will not be elaborated here.

[0112] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be 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 disclosure according to the specific circumstances.

[0113] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit 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 disclosure.

[0114] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0115] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A CNC rotary table for a CNC spiral bevel gear machine tool, characterized in that, include: The first rotating assembly includes a first driving part and a first rotating shaft part. The first driving part is connected to the first rotating shaft part and is used to drive the first rotating shaft part to rotate. The axis of the first rotating shaft part extends along a first direction. The second rotating component is disposed at one end of the first rotating shaft. The second rotating component is used to connect the workpiece to be processed and to drive the workpiece to be processed to rotate around a second direction, the second direction being perpendicular to the first direction. A first braking component is disposed on the first rotating component and is used to apply a first braking force to a first axial position of the first rotating shaft portion; The second braking component is disposed on the first rotating component and is used to apply a second braking force to a second axial position of the first rotating shaft portion, wherein the second axial position and the first axial position are spaced apart along the first direction.

2. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 1, characterized in that, The first rotating shaft includes a first shaft segment, a second shaft segment, and a brake disc. The second shaft segment is connected between the first shaft segment and the brake disc. The first shaft segment, the second shaft segment, and the brake disc are arranged coaxially. The second rotating assembly is connected to the end of the first shaft segment away from the second shaft segment. The first shaft segment is connected to the first driving unit. The first braking assembly is used to apply the first braking force to the first shaft segment. The second braking assembly is used to apply the second braking force to the brake disc.

3. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 2, characterized in that, The first braking assembly includes: A brake ring is movably fitted onto the first shaft segment. One end of the brake ring has a brake wall. The housing of the first drive unit has a mating wall arranged opposite to the brake wall. The brake wall is used to abut against the mating wall to apply friction to the mating wall. The second driving unit is used to drive the brake ring to move along the first direction so that the brake wall abuts against or separates from the mating wall.

4. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 3, characterized in that, The first braking assembly further includes: A reset member is connected between the brake ring and the first shaft segment, and the reset member is used to apply a reset force away from the mating wall to the brake ring along the first direction.

5. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 2, characterized in that, The second braking assembly includes: A double-acting cylinder, one end of which is hinged to the brake disc on the side opposite to the second shaft section in the extension direction, and the other end is hinged to the bed of the CNC spiral bevel gear machine tool.

6. The CNC rotary table for a CNC spiral bevel gear machine tool according to any one of claims 2 to 5, characterized in that, Also includes: A third braking assembly is connected to the brake disc, and the third braking assembly is configured to apply a third braking force to the brake disc when the first drive unit is de-energized.

7. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 6, characterized in that, The third braking component includes: A clamping device used for hinged to the bed of a CNC spiral bevel gear machine tool; An optical axis, one end of which is hinged to the brake disc, and the optical axis is slidably passed through the clamp, so that the distance between the end of the optical axis that is hinged to the brake disc and the hinge point between the clamp and the bed is adjustable; The clamp is configured to restrict the sliding of the optical axis when the first drive unit is de-energized.

8. The CNC rotary table for a CNC spiral bevel gear machine tool according to any one of claims 1 to 5, characterized in that, Also includes: An angle encoder is disposed on the first rotating component and is used to detect the angular displacement information of the first rotating shaft.

9. The CNC rotary table for a CNC spiral bevel gear machine tool according to claim 8, characterized in that, Also includes: The control component includes the angle encoder, the first braking component, and the second braking component, all of which are signal-connected to the control component. The control component is configured to control the first braking component and the second braking component to apply braking force to the first rotating shaft when the angular displacement information of the first rotating shaft reaches the target angular displacement.

10. A CNC spiral bevel gear machine tool, characterized in that, include: The CNC rotary table for a CNC spiral bevel gear machine tool as described in any one of claims 1 to 9.

Images