A five-axis dual direct-drive motor concentricity precision adjustment device and installation method thereof

Abstract

The present invention discloses a five-axis dual direct-drive motor concentric precision adjustment device and an installation method thereof, and specifically relates to the technical field of CNC machining centers. The device comprises a machine tool base, both sides of which are fixedly provided with direct-drive motors, a Y-axis sliding assembly is slidably provided above the machine tool base, and an X-axis sliding assembly is slidably provided on the front side of the Y-axis sliding assembly for installing a tool. The present invention sets an active measurement assembly so that a high-precision micrometer assembly can be adapted to machine tools of more specifications, and thus there is no need to adjust the fixed position of the high-precision micrometer assembly multiple times, which effectively improves the measurement efficiency of the staff; by setting a passive measurement assembly, the device can be adapted to motors of more specifications, which effectively improves the versatility of the equipment, and by using an auxiliary suspension mounting ring, the work intensity of the staff is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machining centers, and more specifically, to a five-axis dual direct-drive motor concentricity precision adjustment device and an installation method thereof. Background Art

[0002] The five-axis machining center is a highly advanced manufacturing equipment that combines computer numerical control (CNC) technology and precision mechanical engineering to achieve simultaneous control of the workpiece in five different directions. Compared with traditional three-axis machine tools, this type of machining center has higher flexibility and machining accuracy and can handle parts with more complex shapes. Therefore, the five-axis machining center is widely used in aerospace, automotive manufacturing, mold manufacturing, and medical equipment.

[0003] According to the different structures and functions, common five-axis machining centers can be divided into several types, such as double swing head type, tilting swing head type, double turntable type, tilting worktable type and one swing and one turn type. In some applications that require high precision, high response speed and high torque, such as on five-axis machine tools with double swing heads or double turntables, in order to achieve fast and accurate positioning, dual direct drive motors are usually used to drive the rotating axis. The direct drive motor can be directly connected to the rotating axis without going through intermediate links such as reducers, which can reduce the error in mechanical transmission and improve the overall accuracy and response speed of the system.

[0004] In the assembly and production of double rotary table machine tools, the two direct drive motors used to drive the worktable to rotate are usually installed under or on both sides of the worktable, coaxial with the worktable's rotation axis. In addition, the concentricity accuracy of the two direct drive motors and the worktable's rotation axis is very important, and any deviation may cause vibration or premature wear. Therefore, in order to ensure assembly accuracy, a concentricity measuring instrument is usually used for measurement and adjustment.

[0005] However, the existing concentricity measuring instruments still have many shortcomings in actual use. Common concentricity measuring instruments usually use a magnetic base to fix the entire device to a certain part of the machine tool for measurement. In order to ensure the portability and stability of the measuring equipment, the connecting rod used to support the micrometer on the equipment is usually not set too long. For some small machine tools, this measuring instrument is sufficient. However, when measuring some large five-axis machine tools with dual direct-drive motors, such as five-axis machine tools with a diameter of 800mm or more, due to the large size of the machine tools, the direct-drive motors on both sides are far apart. In actual use, after measuring one motor, it is necessary to change the fixed position to measure another motor. Therefore, the equipment needs to be re-fixed, which significantly increases the testing time of the staff and reduces the assembly efficiency of the machine tool. Summary of the invention

[0006] The present invention provides a five-axis dual direct-drive motor concentricity precision adjustment device and an installation method thereof, and aims to solve the problem that when the existing concentricity measuring instrument is used to measure a large five-axis machine tool equipped with dual direct-drive motors, it is necessary to change the fixed position to measure another motor, which increases the testing time of the staff and significantly reduces the assembly efficiency of the machine tool.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a five-axis dual direct-drive motor concentric precision adjustment device, comprising a machine tool base, direct-drive motors are fixedly arranged on both sides of the machine tool base, a Y-axis sliding assembly is slidably arranged above the machine tool base, and an X-axis sliding assembly is slidably arranged on the front side of the Y-axis sliding assembly for installing a tool;

[0008] A set of X-axis guide rails are fixedly arranged above the machine tool base, and an active measurement component is arranged on the X-axis guide rail. The active measurement component includes a Y-axis guide rail and a high-precision micrometer component. The high-precision micrometer component slides on the Y-axis guide rail.

[0009] A passive measuring assembly is arranged on the Y-axis guide rail, and the passive measuring assembly includes two mounting rings, and a group of first mounting plates, a group of second mounting plates and a group of third mounting plates are fixedly arranged on the inner side of the mounting rings for assembly and connection with the direct-drive motor; a mounting disk is fixedly arranged in the middle position of the first mounting plate, and a passive measuring shaft is fixedly connected to one side of the mounting disk; the passive measuring shaft is adapted to the high-precision micrometer assembly, and is used to measure the concentricity accuracy of the two direct-drive motors.

[0010] In a preferred embodiment, first sliding seats are slidably provided at both left and right ends of the Y-axis guide rail, an auxiliary sliding block is fixedly connected to the bottom of the first sliding block, and the auxiliary sliding block is adapted to the X-axis guide rail.

[0011] In a preferred embodiment, a plurality of second sliding seats are slidably arranged on the Y-axis guide rail, and the bottom of the second sliding seat located in the middle position is fixedly connected to the high-precision micrometer assembly, and the measuring end on the high-precision micrometer assembly can be rotated and adjusted at multiple angles, and can be moved up and down for adjustment.

[0012] In a preferred embodiment, an electric push rod is fixedly provided at the bottom of the second sliding seats on both sides, and an arc-shaped hanger is fixedly provided at the bottom end of the output shaft of the electric push rod for suspending and fixing the passive measurement component.

[0013] In a preferred embodiment, the angle between the central axes of the first mounting plate and the second mounting plate, both located on top, is 60°, and the angle between the central axes of the first mounting plate and the third mounting plate, both located on top, is 90°.

[0014] In a preferred embodiment, the first mounting plate, the second mounting plate and the third mounting plate are all fixedly connected to the mounting disk, and the mounting disk is located in the middle position of the mounting ring, and strip grooves are provided on the mounting disk and the first mounting plate, the second mounting plate and the third mounting plate.

[0015] In a preferred embodiment, an annular groove is formed on one side of the mounting ring close to the passive measuring axis, and three sliding rods are fixedly provided on one side of the arc-shaped bracket, and the sliding rods are adapted to the annular groove.

[0016] In a preferred embodiment, a connecting plate is fixedly provided at one end of the passive measuring shaft, and the connecting plate is adapted to the mounting disk and is used to fixedly mount the passive measuring shaft on the mounting disk.

[0017] In a preferred embodiment, a passive measuring disc is fixedly provided at one end of the passive measuring shaft away from the corresponding connecting plate.

[0018] A method for installing a concentric precision adjustment device comprises the following steps:

[0019] Step 1: Slidingly install two first sliding seats and three second sliding seats on the Y-axis guide rail in sequence, and the two first sliding seats are respectively arranged at the outer positions on both sides, the second sliding seat with the high-precision micrometer assembly installed is arranged in the middle position, and the second sliding seats with the electric push rods are respectively arranged on both sides of the high-precision micrometer assembly;

[0020] Step 2: According to the distance between the two X-axis guide rails on the machine tool, adjust the distance between the two first sliding seats, and then slide the auxiliary slide block onto the corresponding X-axis guide rail;

[0021] Step 3: Hang the two mounting rings on the corresponding arc-shaped brackets respectively, and then adjust the height of the mounting rings to align them with the corresponding direct drive motors;

[0022] Step 4: Turn the adjustment mounting ring to align the first mounting plate, the second mounting plate, or the third mounting plate with the threaded hole on the direct-drive motor, and then use bolts to fix the mounting ring on the direct-drive motor. Next, use bolts to mount the passive measuring shaft on the mounting plate. You can use a high-precision micrometer assembly to measure the passive measuring shaft. After obtaining the data, you can adjust the concentricity accuracy of the two direct-drive motors based on the obtained data.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention provides an active measurement component, so that the high-precision dial gauge component can be adapted to machine tools of more specifications, and there is no need to adjust the fixed position of the high-precision dial gauge component multiple times, thereby effectively improving the measurement efficiency of the staff.

[0025] 2. The present invention provides a passive measurement component so that the device can be applied to motors of more specifications, effectively improving the versatility of the equipment and making the device convenient for repeated use. The auxiliary hanging mounting ring effectively reduces the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the machine tool base part of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the active measurement component part of the present invention.

[0029] Figure 4 It is a schematic structural diagram of the arc-shaped hanger part of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the passive measurement component part of the present invention.

[0031] Figure 6 It is a schematic structural diagram of the direct drive motor part of the present invention.

[0032] Figure 7 It is a schematic structural diagram of part A of the present invention.

[0033] Figure 8 The present invention is a flow chart of the installation method of the concentricity precision adjustment device.

[0034] The accompanying drawings are marked as follows: 1. machine tool base; 2. Y-axis sliding assembly; 3. X-axis sliding assembly; 4. X-axis guide rail; 5. active measurement assembly; 6. passive measurement assembly; 7. direct drive motor; 501. Y-axis guide rail; 502. first sliding seat; 503. second sliding seat; 504. high-precision micrometer assembly; 505. electric push rod; 506. arc-shaped bracket; 507. slide rod; 601. mounting ring; 602. first mounting plate; 603. second mounting plate; 604. third mounting plate; 605. strip groove; 606. mounting disk; 607. annular groove; 608. passive measurement shaft; 609. connecting plate; 6010. passive measurement disk. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] Refer to the instruction manual Figure 1-Figure 7 A five-axis dual direct-drive motor concentric precision adjustment device comprises a machine tool base 1, direct-drive motors 7 are fixedly arranged on both sides of the machine tool base 1, a Y-axis sliding assembly 2 is slidably arranged above the machine tool base 1, and an X-axis sliding assembly 3 is slidably arranged on the front side of the Y-axis sliding assembly 2 for installing a tool;

[0037] A set of X-axis guide rails 4 are fixedly arranged above the machine tool base 1, and an active measurement component 5 is arranged on the X-axis guide rails 4. The active measurement component 5 includes a Y-axis guide rail 501 and a high-precision micrometer component 504. The high-precision micrometer component 504 slides on the Y-axis guide rail 501;

[0038] A passive measuring component 6 is arranged on the Y-axis guide rail 501, and the passive measuring component 6 includes two mounting rings 601, and a group of first mounting plates 602, a group of second mounting plates 603 and a group of third mounting plates 604 are fixedly arranged on the inner side of the mounting rings 601 for assembly and connection with the direct drive motor, and a mounting disk 606 is fixedly arranged in the middle position of the first mounting plate 602, and a passive measuring shaft 608 is fixedly connected to one side of the mounting disk 606, and the passive measuring shaft 608 is adapted to the high-precision micrometer component 504, and is used to measure the concentricity accuracy of the two direct drive motors 7.

[0039] Refer to the instruction manual Figure 1 and Figure 3 In this embodiment, first sliding seats 502 are slidably provided at both left and right ends of the Y-axis guide rail 501, and an auxiliary sliding block is fixedly connected to the bottom of the first sliding seat 502, and the auxiliary sliding block is adapted to the X-axis guide rail 4.

[0040] It should be noted that the auxiliary slide block can be disassembled and replaced, which can facilitate the device to be suitable for machine tools of different specifications.

[0041] Refer to the instruction manual Figure 3-Figure 4 In this embodiment, a plurality of second sliding seats 503 are slidably arranged on the Y-axis guide rail 501, and the bottom of the second sliding seat 503 located in the middle position is fixedly connected to the high-precision micrometer assembly 504, and the measuring end on the high-precision micrometer assembly 504 can be rotated and adjusted at multiple angles, and can be moved up and down for adjustment.

[0042] It should be noted that the high-precision micrometer assembly 504 can be used to perform multi-angle measurements.

[0043] Refer to the instruction manual Figure 3-Figure 4In this embodiment, an electric push rod 505 is fixedly provided at the bottom of the second sliding seat 503 located on both sides, and an arc-shaped bracket 506 is fixedly provided at the bottom end of the output shaft of the electric push rod 505 for hanging and fixing the passive measurement component 6.

[0044] It should be noted that the position of the mounting ring 601 can be easily adjusted to facilitate operation by the staff.

[0045] Refer to the instruction manual Figure 5 In this embodiment, the angle between the central axes of the first mounting plate 602 and the second mounting plate 603, both located at the top, is 60°, and the angle between the central axes of the first mounting plate 602 and the third mounting plate 604, both located at the top, is 90°.

[0046] It should be noted that the number of mounting holes on a common motor is usually an integer multiple of three or four, so the above setting can effectively improve the versatility of the device.

[0047] Refer to the instruction manual Figure 4-Figure 5 In this embodiment, the first mounting plate 602, the second mounting plate 603 and the third mounting plate 604 are all fixedly connected to the mounting plate 606, and the mounting plate 606 is located in the middle position of the mounting ring 601, and the mounting plate 606 and the first mounting plate 602, the second mounting plate 603 and the third mounting plate 604 are all provided with strip grooves 605.

[0048] It should be noted that: it is convenient to use bolts of different specifications for installation.

[0049] Refer to the instruction manual Figure 4-Figure 7 In this embodiment, the implementation scenario is specifically as follows: an annular groove 607 is provided on one side of the mounting ring 601 close to the passive measuring axis 608 , and three sliding rods 507 are fixedly provided on one side of the arc-shaped bracket 506 , and the sliding rods 507 are adapted to the annular groove 607 .

[0050] It should be noted that it is convenient for auxiliary workers to install the installation ring 601, which improves the assembly efficiency and reduces the work intensity of the workers.

[0051] Refer to the instruction manual Figure 3-Figure 4 In this embodiment, a connecting plate 609 is fixedly provided at one end of the passive measuring shaft 608 , and the connecting plate 609 is adapted to the mounting disk 606 for fixing the passive measuring shaft 608 on the mounting disk 606 .

[0052] It should be noted that: passive measuring shafts 608 of different specifications can be easily replaced and installed, thereby improving the versatility of the device.

[0053] Refer to the instruction manual Figure 3 and Figure 4 In this embodiment, a passive measuring disk 6010 is fixedly provided at one end of the passive measuring shaft 608 away from the corresponding connecting plate 609 .

[0054] It should be noted that by providing the passive measurement disk 6010 , the cross-sectional diameter of the passive measurement shaft 608 can be increased, thereby increasing the measurement accuracy.

[0055] Refer to the instruction manual Figure 8 The present invention also provides a method for installing a concentric precision adjustment device, comprising the following steps:

[0056] Step 1: Slidingly install two first sliding seats 502 and three second sliding seats 503 on the Y-axis guide rail 501 in sequence, and the two first sliding seats 502 are respectively arranged at the outer positions on both sides, the second sliding seat 503 with the high-precision micrometer assembly 504 is arranged in the middle position, and the second sliding seats 503 with the electric push rod 505 are respectively arranged on both sides of the high-precision micrometer assembly 504;

[0057] Step 2: According to the distance between the two X-axis guide rails 4 on the machine tool, adjust the distance between the two first sliding seats 502, and then slide the auxiliary slide block onto the corresponding X-axis guide rail 4;

[0058] Step 3: hang and install two mounting rings 601 on the corresponding arc-shaped brackets 506 respectively, and then adjust the height of the mounting rings 601 to align them with the corresponding direct drive motors 7;

[0059] Step 4: Rotate and adjust the mounting ring 601 to align the first mounting plate 602 or the second mounting plate 603 or the third mounting plate 604 with the threaded holes on the direct-drive motor 7, and then use bolts to fix the mounting ring 601 on the direct-drive motor 7. Next, use bolts to install the passive measuring shaft 608 on the mounting plate 606. The high-precision micrometer assembly 504 can be used to measure the passive measuring shaft 608. After obtaining the data, the concentricity accuracy of the two direct-drive motors 7 can be adjusted according to the obtained data.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A five-axis dual direct drive motor concentricity precision adjustment device, Features: The machine tool comprises a machine tool base (1), both sides of which are fixedly provided with direct drive motors (7), a Y-axis sliding assembly (2) is slidably provided above the machine tool base (1), and an X-axis sliding assembly (3) is slidably provided on the front side of the Y-axis sliding assembly (2) for installing a tool; A set of X-axis guide rails (4) are fixedly arranged above the machine tool base (1); an active measurement component (5) is arranged on the X-axis guide rail (4); the active measurement component (5) comprises a Y-axis guide rail (501) and a high-precision micrometer component (504); and the high-precision micrometer component (504) slides on the Y-axis guide rail (501); A passive measuring assembly (6) is arranged on the Y-axis guide rail (501), and the passive measuring assembly (6) comprises two mounting rings (601), a group of first mounting plates (602), a group of second mounting plates (603) and a group of third mounting plates (604) are fixedly arranged on the inner side of the mounting rings (601) for assembly and connection with the direct-drive motors, a mounting plate (606) is fixedly arranged in the middle position of the first mounting plate (602), and a passive measuring shaft (608) is fixedly connected to one side of the mounting plate (606), and the passive measuring shaft (608) is adapted to the high-precision micrometer assembly (504) and is used to measure the concentricity accuracy of the two direct-drive motors (7); A first sliding seat (502) is slidably provided at both left and right ends of the Y-axis guide rail (501), an auxiliary sliding block is fixedly connected to the bottom of the first sliding seat (502), and the auxiliary sliding block is adapted to the X-axis guide rail (4); A plurality of second sliding seats (503) are slidably arranged on the Y-axis guide rail (501); the bottom of the second sliding seat (503) located in the middle is fixedly connected to the high-precision micrometer assembly (504); and the measuring end of the high-precision micrometer assembly (504) can be rotated and adjusted at multiple angles, and can be moved up and down for adjustment; An electric push rod (505) is fixedly provided at the bottom of the second sliding seat (503) located on both sides, and an arc-shaped hanger (506) is fixedly provided at the bottom end of the output shaft of the electric push rod (505) for hanging and fixing the passive measurement component (6); The first mounting plate (602), the second mounting plate (603) and the third mounting plate (604) are all fixedly connected to the mounting plate (606), and the mounting plate (606) is located in the middle of the mounting ring (601), and the mounting plate (606) and the first mounting plate (602), the second mounting plate (603) and the third mounting plate (604) are all provided with strip grooves (605); An annular groove (607) is provided on one side of the mounting ring (601) close to the passive measuring axis (608), and three sliding rods (507) are fixedly provided on one side of the arc-shaped hanger (506), and the sliding rods (507) are adapted to the annular groove (607).

2. According to claim 1, a five-axis dual direct drive motor concentricity precision adjustment device, Features: The angle between the central axes of the first mounting plate (602) and the second mounting plate (603) both located at the top is 60°, and the angle between the central axes of the first mounting plate (602) and the third mounting plate (604) both located at the top is 90°.

3. According to claim 1, a five-axis dual direct drive motor concentricity precision adjustment device, Features: A connecting plate (609) is fixedly provided at one end of the passive measurement shaft (608); the connecting plate (609) is adapted to the mounting plate (606) and is used to fixedly mount the passive measurement shaft (608) on the mounting plate (606).

4. According to claim 3, a five-axis dual direct drive motor concentricity precision adjustment device, Features: A passive measuring disc (6010) is fixedly provided at one end of the passive measuring shaft (608) away from the corresponding connecting plate (609).

5. A method for installing the concentricity precision adjustment device as claimed in claim 1, It is characterized in that The following steps are involved: Step 1: Slidingly installing two first sliding seats (502) and three second sliding seats (503) on the Y-axis guide rail (501) in sequence, and the two first sliding seats (502) are respectively arranged at the outer positions on both sides, the second sliding seat (503) equipped with a high-precision micrometer assembly (504) is arranged in the middle position, and the second sliding seats (503) equipped with an electric push rod (505) are respectively arranged on both sides of the high-precision micrometer assembly (504); Step 2: adjusting the distance between the two first sliding seats (502) according to the distance between the two X-axis guide rails (4) on the machine tool, and then slidingly installing the auxiliary sliding block on the corresponding X-axis guide rail (4); Step 3: hang and install the two mounting rings (601) on the corresponding arc-shaped hangers (506) respectively, and then adjust the height of the mounting ring (601) so that it is aligned with the corresponding direct drive motor (7); Step 4: Rotate and adjust the mounting ring (601) to align the first mounting plate (602) or the second mounting plate (603) or the third mounting plate (604) with the threaded hole on the direct drive motor (7), and then use bolts to fix the mounting ring (601) on the direct drive motor (7). Next, use bolts to mount the passive measuring shaft (608) on the mounting plate (606), and then use the high-precision micrometer assembly (504) to measure the passive measuring shaft (608). After obtaining the data, the concentricity accuracy of the two direct drive motors (7) can be adjusted according to the obtained data.

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