High-precision rotary working table of combined machining machine tool

Abstract

The utility model provides a composite machine tool high-precision rotating table which comprises an installation base plate and a supporting table, a rotating assembly is arranged in the supporting table, a supporting assembly is arranged between the supporting table and the installation base plate, and an upper adjusting nut and a lower adjusting nut are reversely rotated and unscrewed respectively, so that the upper adjusting nut moves upwards, and the lower adjusting nut moves downwards. According to the machining table, the upper adjusting nut and the lower adjusting nut move downwards, then the supporting plate can be lifted up and down, installation personnel can adjust the use height of the machining table according to requirements, and when the upper adjusting nut and the lower adjusting nut are screwed in a forward rotation mode, the supporting plate can be positioned; the situation that the supporting table displaces or shakes in the using process is avoided, the servo motor is controlled to work so that the servo motor can drive the supporting column to rotate through the worm and the worm gear, the supporting column can drive the machining table to rotate together, and therefore high-precision rotation can be conducted on the machining table.

Description

Technical Field

[0001] This utility model relates to the field of machine tool rotary table technology, specifically a high-precision rotary table for a composite machining machine tool. Background Technology

[0002] A multi-function machining center is a machine tool that can complete or, as far as possible, the processing of multiple elements from blank to finished product on a single host machine. It is generally a CNC machine tool or a machining center, and the worktable is an important component of a multi-function machining center.

[0003] The announcement number "CN221582745U" discloses a rotary worktable for a metal cutting machine tool. Turning the handle drives the lead screw to rotate, which in turn drives the fixing plate to fix the workpiece, which is convenient and quick. Through the cooperation between the buffer spring and the buffer plate, excessive pressure can be prevented from damaging the outer surface of the workpiece when fixing it. After fixing, the rotary motor is started, which drives the first bevel gear to rotate, which in turn drives the placement plate on the rotating shaft to rotate through the second bevel gear, making it easy to adjust the position of the workpiece, expanding the application range of the worktable and increasing its practicality.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] Firstly, the rotary table uses a rotary motor to drive bevel gears one and two, which in turn rotate the placement plate on the shaft. However, this rotating structure lacks self-locking capability during actual use. This causes the placement plate to easily rotate on its own when the rotary motor is not working, affecting the machining accuracy of the workpiece fixed on the placement plate. Furthermore, the drive box in the rotary table lacks a corresponding ventilation and heat dissipation structure, causing the rotary motor inside the drive box to easily accumulate heat during continuous operation, thus affecting the service life of the rotary motor. Secondly, the lifting mechanism in the rotary table is not only complex in structure but also lacks support stability. Utility Model Content

[0006] The purpose of this invention is to provide a high-precision rotary table for a composite machining tool to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-precision rotary table for a composite machining tool includes a mounting base, a support platform, a machining table, a positioning clamp, and limiting grooves. The support platform is mounted on top of the mounting base, and the machining table is mounted on top of the support platform. A positioning clamp is mounted on the upper surface of the machining table, and multiple limiting grooves are formed on the upper surface of the machining table. A rotating component is disposed inside the support platform for rotating the machining table. A support assembly is disposed between the support platform and the mounting base for adjusting and supporting the height of the support platform.

[0009] Preferably, the rotating assembly includes a support column, a servo motor, a worm gear, and a worm wheel. The support column is located at the middle of the lower end face of the processing table. A worm wheel is located on the lower side of the annular side of the support column. A worm gear is engaged with the rear side of the annular side of the worm wheel. A servo motor is installed at the left end of the worm gear.

[0010] Preferably, a ventilation fan blade is installed on the right side of the worm gear annular side, ventilation cavities are symmetrically opened on the left and right sides inside the support platform, and dust removal filters are symmetrically installed on the left and right end faces of the support platform.

[0011] Preferably, the support column has a follower ring on its annular side, a precision bearing is installed on the follower ring's annular side, and a limit cover is installed at the middle position of the upper surface of the support platform, and the limit cover is circular in shape.

[0012] Preferably, the support assembly includes a support screw, a lower adjusting nut, a support plate, and an upper adjusting nut. Support screws are symmetrically fixedly connected to the left and right sides and the front and rear sides of the upper end face of the mounting base. An upper adjusting nut is installed on the upper side of the annular side of the support screw, and a lower adjusting nut is installed on the lower side of the annular side of the support screw. A support plate is provided at the bottom of the support platform.

[0013] Preferably, the support plate has symmetrical through holes on the left and right sides and the front and rear sides, and the through holes are matched with the support screw. The upper adjusting nut and the lower adjusting nut are both made of anti-loosening nuts.

[0014] Preferably, the upper surface of the support platform is symmetrically fixedly connected with support seats on the left and right sides and the front and rear sides, and the upper surface of the support seats is equipped with supporting guide wheels.

[0015] Preferably, a guide block is provided on the lower end face of the positioning clamp, a connecting screw is inserted inside the positioning clamp, a fixing nut is installed on the annular side of the connecting screw, and a limit slider is provided at the lower end of the connecting screw, and the limit slider matches the limit groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By controlling the servo motor, the servo motor drives the support column to rotate via the worm and worm wheel. The support column then drives the machining table to rotate together, thus achieving high-precision rotation of the machining table. The meshing worm and worm wheel also have self-locking capabilities, preventing the support column and machining table from rotating on their own when the servo motor is not working. At the same time, the rotating worm also drives the ventilation fan blades to rotate, allowing most of the heat inside the support table to be discharged to the outside through the ventilation cavity. This prevents the servo motor inside the support table from easily accumulating heat during operation. The support base and supporting guide wheel also provide auxiliary support for the machining table, thereby improving the stability of the machining table during rotation.

[0018] 2. By reversing the tightening of the upper and lower adjusting nuts respectively, the upper adjusting nut moves upward and the lower adjusting nut moves downward, allowing the support plate to be raised and lowered. This enables installers to adjust the working height of the processing table as needed. When the upper and lower adjusting nuts are tightened in the forward direction, the support plate is positioned to prevent displacement or shaking of the support table during use, thus ensuring the stability of the support table. Furthermore, this structure is simple in construction and provides good support stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a front cross-sectional view of the support component and the rotating component in this utility model;

[0021] Figure 3 This is a structural diagram of the support platform in this utility model;

[0022] Figure 4 This is a structural diagram of the mounting substrate in this utility model;

[0023] Figure 5 This is a structural diagram of the processing table in this utility model.

[0024] In the diagram: 1. Mounting base plate; 2. Support assembly; 21. Support screw; 22. Lower adjusting nut; 23. Support plate; 24. Upper adjusting nut; 25. Through hole; 3. Support platform; 4. Machining table; 5. Positioning clamp; 51. Limiting slider; 52. Fixing nut; 53. Connecting screw; 54. Guide block; 6. Limiting groove; 7. Rotating assembly; 71. Support column; 72. Limiting cover; 73. Follower ring; 731. Precision bearing; 74. Servo motor; 75. Worm gear; 76. Worm wheel; 77. Ventilation fan blade; 78. Ventilation cavity; 781. Dust filter screen; 79. Support base; 711. Supporting guide wheel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] Example 1:

[0028] A high-precision rotary table for a composite machining tool includes a mounting base 1, a support platform 3, a machining table 4, a positioning clamp 5, and a limiting groove 6. The support platform 3 is mounted on top of the mounting base 1, and the support platform 3 can support the rotating component 7. The machining table 4 is mounted on top of the support platform 3, and the machining table 4 can support the external parts to be processed. The positioning clamp 5 is mounted on the upper surface of the machining table 4. The positioning clamp 5 is L-shaped. The L-shaped positioning clamp 5 makes it convenient for the operator to clamp and fix the external parts to be processed placed on the upper surface of the machining table 4, so as to prevent the external parts to be processed from shifting or shaking during the processing.

[0029] The upper surface of the processing table 4 is provided with multiple limiting grooves 6, which can limit and guide the guide block 54 and the limiting slider 51 respectively. The lower surface of the positioning clamp 5 is provided with a guide block 54, which matches the limiting groove 6. The guide block 54 and the positioning clamp 5 are an integral structure. The guide block 54 prevents the positioning clamp 5 from swinging back and forth during lateral displacement. A connecting screw 53 is inserted inside the positioning clamp 5. The connecting screw 53 is connected to the limiting slider 51 by welding. A fixing nut 52 is installed on the annular side of the connecting screw 53. A limiting slider 51 is provided at the lower end of the connecting screw 53, and the limiting slider 51 matches the limiting groove 6. The connecting screw 53, the fixing nut 52 and the limiting slider 51 can install and fix the positioning clamp on the upper surface of the processing table 4.

[0030] The support platform 3 is equipped with a rotating component 7, which is used to rotate the processing table 4 with high precision. A support component 2 is provided between the support platform 3 and the mounting base plate 1, which is used to adjust the height of the support platform 3 and provide support. The mounting base plate 1 has symmetrical mounting holes on the left and right sides inside, which facilitates the installer to install and fix the mounting base plate 1 at the designated position of the external composite processing machine tool.

[0031] The rotating assembly 7 includes a support column 71, a servo motor 74, a worm gear 75, and a worm wheel 76. The support column 71 is located at the middle of the lower end face of the machining table 4. The support column 71 is connected to the machining table 4, the follower ring 73, and the worm wheel 76 by welding. The support column 71 can support the machining table 4. The worm wheel 76 is located on the lower side of the annular side of the support column 71. The worm gear 75 is meshed on the rear side of the annular side of the worm wheel 76. The servo motor 74 is installed at the left end of the worm gear 75. When the servo motor 74 is working, it can drive the support column 71 to rotate through the worm gear 75 and the worm wheel 76, so that the support column 71 can drive the machining table 4 to rotate with high precision. The servo motor 74 is connected to an external servo driver through wires. The external servo driver can control the servo motor 74 in three ways: position, speed, and torque, so as to achieve high-precision positioning of the transmission system.

[0032] A ventilation fan blade 77 is installed on the right side of the annular side of the worm gear 75. When the ventilation fan blade 77 rotates, it will exhaust most of the heat inside the support platform 3 to the outside through the ventilation cavity 78, preventing the servo motor 74 inside the support platform 3 from easily accumulating heat during operation. The support platform 3 has symmetrical ventilation cavities 78 on the left and right sides. The ventilation cavities 78 not only facilitate the entry of external air into the support platform 3, but also facilitate the exhaust of heat from the support platform 3 to the outside. Dust removal filters 781 are symmetrically installed on the left and right ends of the support platform 3. The dust removal filters 781 are detachable and can filter and remove dust from the air entering the ventilation cavity 78. A follower ring 73 is provided on the annular side of the support column 71. The upper end of the support platform 3 A limit cover 72 is installed in the middle of the surface, and the limit cover 72 is circular in shape. The follower ring 73 and the circular limit cover 72 prevent the support column 71 from shifting or shaking during rotation. A precision bearing 731 is installed on the annular side of the follower ring 73. The precision bearing 731 reduces the frictional resistance and jumping force of the follower ring 73 during rotation, thereby ensuring the rotational stability of the support column 71. Support seats 79 are symmetrically fixedly connected to the left and right sides and the front and rear sides of the upper end face of the support table 3. A support guide wheel 711 is installed on the upper end face of the support seat 79. The support seat 79 can support the support guide wheel 711 so that the support guide wheel 711 can provide auxiliary support for the processing table 4, thereby improving the stability of the processing table 4 during rotation.

[0033] Example 2:

[0034] Based on Embodiment 1, in this embodiment, by reversing the tightening of the upper adjusting nut 24 and the lower adjusting nut 22 respectively, the upper adjusting nut 24 moves upward and the lower adjusting nut 22 moves downward, and then the support plate 23 can be raised and lowered, so that the installer can adjust the height of the processing table 4 as needed. When the upper adjusting nut 24 and the lower adjusting nut 22 are tightened in the forward direction, the support plate 23 can be positioned to prevent the support table 3 from shifting or shaking during use, thereby ensuring the stability of the support table 3.

[0035] The support assembly 2 includes a support screw 21, a lower adjusting nut 22, a support plate 23, and an upper adjusting nut 24. The support screw 21 is symmetrically fixed to the left and right sides and the front and rear sides of the upper end face of the mounting base plate 1. The support screw 21 is connected to the mounting base plate 1 by welding. The support screw 21 can not only support the upper adjusting nut 24 and the lower adjusting nut 22, but also limit the position of the support plate 23 through the through hole 25. The upper adjusting nut 24 is installed on the upper side of the annular side of the support screw 21, and the lower adjusting nut 22 is installed on the lower side of the annular side of the support screw 21. The upper adjusting nut 24 and the lower adjusting nut 22 can not only fix the support plate 23, but also facilitate the installation personnel to adjust the height of the support plate 23.

[0036] Both the upper adjusting nut 24 and the lower adjusting nut 22 are made of anti-loosening nuts, which provides better anti-loosening and tightening force. The bottom of the support platform 3 is provided with a support plate 23, which is an integral structure with the support platform 3. The support plate 23 can support the support platform 3. The support plate 23 has symmetrical through holes 25 on the left and right sides and the front and back sides inside, and the through holes 25 match the support screw 21. The through holes 25 facilitate the insertion of the support screw 21 into the support base 79.

[0037] Working Principle: After the installer fixes the mounting base plate 1 to the designated position on the external composite machining tool, they first use an external wrench to loosen the upper adjusting nuts 24 and lower adjusting nuts 22 in reverse. This causes the upper adjusting nuts 24 to move upward and the lower adjusting nuts 22 to move downward, allowing the support plate 23 to be raised and lowered. This allows the installer to adjust the operating height of the machining table 4 as needed. Once the operating height of the machining table 4 is adjusted to the required height, one installer holds the support plate 23 still while another installer uses an external wrench to tighten the upper adjusting nuts 24 and lower adjusting nuts 22 in a forward direction. This positions the support plate 23 and prevents displacement or shaking of the support table 3 during use. Subsequently, the installer can control the servo motor 74 through an external servo driver and perform high-precision transmission system positioning of the servo motor 74 using position, speed, and torque methods. During this process, the working servo motor... The worm gear 74 drives the support column 71 to rotate via the worm 75 and worm wheel 76, causing the support column 71 to rotate along with the machining table 4. This provides high-precision rotation control for the machining table 4. The limit cover 72 and the follower ring 73 prevent the support column 71 from shifting or wobbling during rotation. The precision bearing 731 reduces the frictional resistance and jumping force of the follower ring 73 during rotation, ensuring the rotational stability of the support column 71. At the same time, the support base 79 and the supporting guide wheel 711 provide auxiliary support for the machining table 4, thereby improving the stability of the machining table 4 during rotation. The rotating worm 75 drives the ventilation fan blades 77 to rotate along with the support column 74, allowing most of the heat inside the support table 3 to be discharged to the outside through the ventilation cavity 78. This prevents the servo motor 74 inside the support table 3 from easily accumulating heat during operation. Furthermore, the meshing worm 75 and worm wheel 76 have self-locking capabilities, preventing the support column 71 and machining table 4 from rotating on their own when the servo motor 74 is not working.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision rotary table for a composite machining center, comprising a mounting base (1), a support platform (3), a machining table (4), a positioning clamp (5), and a limiting groove (6), characterized in that: A support platform (3) is installed above the mounting base (1), and a processing table (4) is installed above the support platform (3). A positioning clamp (5) is installed on the upper surface of the processing table (4), and multiple limiting grooves (6) are opened on the upper surface of the processing table (4). The support platform (3) is provided with a rotating component (7) inside, and the rotating component (7) is used to rotate the processing table (4). A support component (2) is provided between the support platform (3) and the mounting base plate (1), and the support component (2) is used to adjust the height of the support platform (3) and provide support.

2. The high-precision rotary table of a composite machining center according to claim 1, characterized in that: The rotating assembly (7) includes a support column (71), a servo motor (74), a worm (75), and a worm wheel (76). The support column (71) is located at the middle of the lower end face of the processing table (4). The worm wheel (76) is located on the lower side of the annular side of the support column (71). The worm (75) is meshed on the rear side of the annular side of the worm wheel (76). The servo motor (74) is installed on the left end of the worm (75).

3. The high-precision rotary table of a composite machining center according to claim 2, characterized in that: A ventilation fan blade (77) is installed on the right side of the annular side of the worm (75), and ventilation cavities (78) are symmetrically opened on the left and right sides inside the support platform (3). Dust removal filter screens (781) are symmetrically installed on the left and right ends of the support platform (3).

4. The high-precision rotary table of a composite machining center according to claim 2, characterized in that: The support column (71) has a follower ring (73) on its annular side, and a precision bearing (731) is installed on the annular side of the follower ring (73). A limit cover (72) is installed at the middle position of the upper end face of the support platform (3), and the limit cover (72) is circular in shape.

5. The high-precision rotary table of a composite machining center according to claim 1, characterized in that: The support assembly (2) includes a support screw (21), a lower adjusting nut (22), a support plate (23), and an upper adjusting nut (24). The support screw (21) is symmetrically fixedly connected to the left and right sides and the front and rear sides of the upper end face of the mounting base plate (1). The upper adjusting nut (24) is installed on the upper side of the annular side of the support screw (21), and the lower adjusting nut (22) is installed on the lower side of the annular side of the support screw (21). The support plate (23) is provided at the bottom of the support platform (3).

6. A high-precision rotary table for a composite machining center according to claim 5, characterized in that: The support plate (23) has symmetrical through holes (25) on the left and right sides and the front and back sides, and the through holes (25) are matched with the support screw (21).

7. The high-precision rotary table of a composite machining center according to claim 1, characterized in that: The support platform (3) is symmetrically fixed with support seats (79) on the left and right sides and front and rear sides of the upper end face, and the support seats (79) are equipped with support guide wheels (711) on the upper end face.

8. The high-precision rotary table of a composite machining center according to claim 1, characterized in that: The lower end face of the positioning clamp (5) is provided with a guide block (54), and a connecting screw (53) is inserted inside the positioning clamp (5). A fixing nut (52) is installed on the annular side of the connecting screw (53). A limit slider (51) is provided at the lower end of the connecting screw (53), and the limit slider (51) matches the limit groove (6).

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