Single-column four-spindle box moving mechanism

Abstract

The application discloses a single-stand-column four-main-shaft-box motion mechanism, which comprises an octagonal stand column, four sets of roller guides are uniformly arranged around the octagonal stand column, a damping transmission system is arranged between the four sets of roller guides, a herringbone main shaft box is arranged on the roller guides and the damping transmission system, a damping main motor seat is arranged on the top surface of the herringbone main shaft box, a main motor is arranged on the damping main motor seat, and a damping system is arranged on the octagonal stand column and the herringbone main shaft box. The herringbone main shaft box is uniformly arranged around the octagonal stand column, and the gravity center of the herringbone main shaft box is close to the octagonal stand column, so that the stability of the multiple herringbone main shaft boxes during simultaneous operation is improved. In addition, the herringbone main shaft box is obliquely and double-positioned arranged on the roller guide and moves up and down, so that the stability and machining precision are further improved. In the damping system, two opposite vibration waveforms are superposed and offset, so that the stability of the operation of the device is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, specifically to a single-column four-spindle head motion mechanism. Background Technology

[0002] In the machine tool industry, most machine tools, such as boring machines, lathes, drilling and tapping machines, mainly use a single spindle to process parts, performing different processes on the same part. However, the above processing method cannot process multiple parts or multiple processes at the same time. Therefore, providing an efficient four-spindle high-precision vertical machining center is a problem that urgently needs to be solved by those skilled in the art.

[0003] Currently, most multi-spindle boxes are rectangular box-type structures, connected to one side of the column via guide rails. The spindle boxes are placed side by side for processing multiple parts or multiple processes simultaneously.

[0004] While existing multi-spindle boxes, placed side by side, enable the simultaneous processing of multiple parts or processes, this can easily lead to uneven stress on the columns. Furthermore, when multiple spindle boxes are processing simultaneously, interference can easily occur between them, resulting in increased vibration during the processing and a tendency to resonate. This significantly reduces processing accuracy and makes it impossible to guarantee high-precision and high-speed processing with multiple spindle boxes. Summary of the Invention

[0005] The purpose of this invention is to provide a single-column four-spindle box motion mechanism to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A single-column four-spindle headstock motion mechanism includes an octagonal column, four sets of roller guides evenly arranged around the octagonal column, a damping transmission system between the four sets of roller guides, a herringbone-shaped spindle headstock mounted on the roller guides and the damping transmission system, a damping main motor mount mounted on the top surface of the herringbone-shaped spindle headstock, a main motor mounted on the damping main motor mount, and a damping system mounted on the octagonal column and the herringbone-shaped spindle headstock.

[0008] Preferably, the damping transmission system includes a motor base, a first damping pad, a lead screw, a second damping pad, and a bearing housing. The motor base and the first damping pad are connected to the top surface of the octagonal column, and the bearing housing and the second damping pad are connected to the side surface of the octagonal column. The lead screw is located between the motor base and the bearing housing, and the lead screw drives the herringbone spindle box to move through a lead screw nut.

[0009] Preferably, the damping system includes an acceleration sensor, a piezoelectric ceramic patch, and a data analysis module. The acceleration sensor and the piezoelectric ceramic patch are connected to the herringbone spindle box, and the acceleration sensor and the piezoelectric ceramic patch are connected to the data analysis module via a data cable.

[0010] Preferably, the nut is fixedly connected to the herringbone spindle box, the lead screw is threadedly connected to the nut, a slider is slidably connected to the roller guide, and the two ends of the herringbone spindle box near the octagonal column are respectively fixedly connected to the sliders on the roller guide at the corresponding positions.

[0011] Preferably, the octagonal column has a centrally symmetrical structure, and the center of gravity of the herringbone-shaped spindle box arranged around the octagonal column is located at the center of the octagonal column.

[0012] Preferably, the octagonal column is divided into inner and outer layers. The outer layer of the octagonal column is connected to the roller guide and the damping transmission system, and the data analysis module is placed in the inner layer of the octagonal column.

[0013] The beneficial effects of this invention are:

[0014] 1. Through the arrangement and collaboration of octagonal columns, roller guides, damping transmission systems, and herringbone spindle boxes, the four herringbone spindle boxes are evenly distributed around the octagonal columns. The herringbone shape of the spindle boxes causes their centers of gravity to lean towards the octagonal columns, thus stabilizing the octagonal columns' structure. This improves the stability of the four herringbone spindle boxes during simultaneous operation, thereby enhancing machining accuracy. Furthermore, the oblique double-positioning up-and-down movement of the herringbone spindle boxes on the roller guides further improves their operational stability, further enhancing machining accuracy.

[0015] 2. The damping system is designed so that the accelerometer detects the vibration waveform of the herringbone spindle box and transmits it to the data analysis module. The data analysis module then transmits the voltage signal of the opposite waveform to the corresponding piezoelectric ceramic patch, causing the two opposite waveforms to superimpose and cancel each other out. This greatly improves the stability of the octagonal column and the herringbone spindle box during operation. The structure is ingenious and easy to install, which greatly improves the processing accuracy of this device.

[0016] 3. Through the arrangement and cooperation of the lead screw, slider, and lead nut, the lead nut drives the herringbone spindle box to move. The two ends of the herringbone spindle box near the octagonal column slide on the roller guide rail through the slider. This not only further improves the stability of the herringbone spindle box operation, but also facilitates the disassembly and installation of the herringbone spindle box from the octagonal column, making maintenance easier. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the damping transmission system in this invention;

[0020] Figure 3 This is a schematic diagram of the damping system in this invention;

[0021] Figure 4 This is a schematic diagram of the herringbone-shaped spindle box in this invention;

[0022] Figure 5 This is a schematic diagram of the octagonal column structure in this invention.

[0023] In the diagram: 1. Octagonal column; 2. Herringbone spindle box; 3. Damping transmission system; 301. Motor mount; 302. First damping pad; 303. Lead screw; 304. Second damping pad; 305. Bearing seat; 4. Damping main motor mount; 5. Damping system; 501. Accelerometer; 502. Piezoelectric ceramic patch; 503. Data analysis module; 6. Roller guide rail. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1-5 As shown, the present invention is a single-column four-spindle headstock motion mechanism, including an octagonal column 1, four sets of roller guide rails 6 are evenly arranged around the octagonal column 1, a damping transmission system 3 is arranged between the four sets of roller guide rails 6, a herringbone spindle headstock 2 is arranged on the roller guide rails 6 and the damping transmission system 3, a damping main motor seat 4 is arranged on the top surface of the herringbone spindle headstock 2, a main motor is arranged on the damping main motor seat 4, and a damping system 5 is arranged on the octagonal column 1 and the herringbone spindle headstock 2.

[0026] By setting up and cooperating with the octagonal column 1, roller guide rail 6, damping transmission system 3, and herringbone spindle box 2, the four herringbone spindle boxes 2 are evenly arranged around the octagonal column 1. The center of gravity of the herringbone spindle boxes 2 is close to the octagonal column 1 due to their herringbone shape. This improves the stability of the four herringbone spindle boxes 2 during operation, thereby improving the machining accuracy. Furthermore, the herringbone spindle boxes 2 move up and down obliquely in double positioning on the roller guide rail 6, which further improves the stability of the herringbone spindle boxes 2 during operation, and the machining accuracy is further improved.

[0027] Furthermore, the damping transmission system 3 includes a motor base 301, a first damping pad 302, a lead screw 303, a second damping pad 304, and a bearing housing 305. The motor base 301 and the first damping pad 302 are connected to the top surface of the octagonal column 1, and the bearing housing 305 and the second damping pad 304 are connected to the side surface of the octagonal column 1. The lead screw 303 is located between the motor base 301 and the bearing housing 305. The lead screw 303 drives the herringbone spindle box 2 to move through the lead screw nut. It should be noted that one end of the lead screw 303 located in the motor base 301 is fixedly connected to the output end of the main motor.

[0028] The motor mount 301, the first damping pad 302, and the second damping pad 304 greatly reduce the vibration impact of the main motor on the herringbone spindle box 2 during operation. The first damping pad 302 and the second damping pad 304 are die-cast from 0.02mm 7075 aluminum alloy chips, 0.02mm stainless steel chips, polytetrafluoroethylene, and rubber in a volume ratio of 4:3:2:2 using a 50t press. The damping coefficient is tested to be more than 5 times that of cast iron.

[0029] Furthermore, the damping system 5 includes an acceleration sensor 501, a piezoelectric ceramic patch 502, and a data analysis module 503. The acceleration sensor 501 and the piezoelectric ceramic patch 502 are connected to the herringbone spindle box 2, and the acceleration sensor 501 and the piezoelectric ceramic patch 502 are connected to the data analysis module 503 via a data cable.

[0030] It should be noted that sixteen accelerometers 501 are evenly arranged on the four inner faces of the octagonal column 1, and sixteen piezoelectric ceramic patches 502 are correspondingly arranged on the outer surface of the octagonal column 1. An accelerometer 501 is arranged on the left, right and top sides of the herringbone spindle box 2, and a piezoelectric ceramic patch 502 is arranged on the left and right sides of the herringbone spindle box 2. Two piezoelectric ceramic patches 502 are arranged on the top side of the herringbone spindle box 2.

[0031] It should be further explained that the accelerometer 501 detects the vibration waveform of the octagonal column 1 and transmits it to the data analysis module 503. The data analysis module 503 transmits the voltage signal of the opposite waveform to the corresponding piezoelectric ceramic patch 502. The two opposite waveforms superimpose and cancel each other out. Similarly, the accelerometer 501 detects the vibration waveform of the herringbone spindle box 2 and transmits it to the data analysis module 503. The data analysis module 503 transmits the voltage signal of the opposite waveform to the corresponding piezoelectric ceramic patch 502, causing the two opposite waveforms to superimpose and cancel each other out. This greatly improves the stability of the octagonal column 1 and the herringbone spindle box 2 during operation. The structure is ingenious, easy to install, and greatly improves the processing accuracy of this device.

[0032] Furthermore, the nut is fixedly connected to the herringbone spindle box 2, the lead screw 303 is threadedly connected to the nut, and a slider is slidably connected on the roller guide rail 6. The two ends of the herringbone spindle box 2 on the side near the octagonal column 1 are fixedly connected to the sliders on the roller guide rail 6 at the corresponding positions.

[0033] By setting up and cooperating with the lead screw 303, the lead screw 303 drives the herringbone spindle box 2 to move through the lead screw 303. The two ends of the herringbone spindle box 2 on the side closest to the octagonal column 1 slide on the roller guide rail 6 through the slider. This not only further improves the stability of the herringbone spindle box 2, but also facilitates the disassembly and installation of the herringbone spindle box 2 from the octagonal column 1, making maintenance easier.

[0034] It should be noted that the octagonal column 1 is a centrally symmetrical structure. The center of gravity of the herringbone spindle box 2 set around the octagonal column 1 is located at the center of the octagonal column 1. The octagonal column 1 is divided into inner and outer layers. The outer layer of the octagonal column 1 is connected to the roller guide rail 6 and the damping transmission system 3, and the data analysis module 503 is placed in the inner layer of the octagonal column 1.

[0035] By utilizing the structural design of the octagonal column 1, and taking advantage of the fact that the center of gravity of the herringbone spindle box 2 around the octagonal column 1 is located at the center of the octagonal column 1, the structural mechanics of the octagonal column 1 is stable. During operation, the octagonal column 1 can maintain a good stable state. The structure is ingenious, the effect is obvious, and it is suitable for widespread use.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A single-column four-spindle box motion mechanism, characterized in that, It includes an octagonal column (1), four sets of roller guides (6) are evenly arranged around the octagonal column (1), a damping transmission system (3) is arranged between the four sets of roller guides (6), a herringbone spindle box (2) is arranged on the roller guides (6) and the damping transmission system (3), a damping main motor seat (4) is arranged on the top surface of the herringbone spindle box (2), a main motor is arranged on the damping main motor seat (4), and a damping system (5) is arranged on the octagonal column (1) and the herringbone spindle box (2). The damping transmission system (3) includes a motor base (301), a first damping pad (302), a lead screw (303), a second damping pad (304), and a bearing housing (305). The motor base (301) and the first damping pad (302) are connected to the top surface of the octagonal column (1), and the bearing housing (305) and the second damping pad (304) are connected to the side surface of the octagonal column (1). The lead screw (303) is located between the motor base (301) and the bearing housing (305). The lead screw (303) drives the herringbone spindle box (2) to move through the lead screw nut. The damping system (5) includes an acceleration sensor (501), a piezoelectric ceramic patch (502), and a data analysis module (503). The acceleration sensor (501) and the piezoelectric ceramic patch (502) are connected to the herringbone spindle box (2), and the acceleration sensor (501) and the piezoelectric ceramic patch (502) are connected to the data analysis module (503) via a data cable. The octagonal column (1) is a centrally symmetrical structure, and the center of gravity of the herringbone-shaped spindle box (2) set around the octagonal column (1) is located at the center of the octagonal column (1).

2. The single-column four-spindle box motion mechanism according to claim 1, characterized in that, The nut is fixedly connected to the herringbone spindle box (2), the lead screw (303) is threadedly connected to the nut, a slider is slidably connected on the roller guide rail (6), and the two ends of the herringbone spindle box (2) near the octagonal column (1) are fixedly connected to the sliders on the roller guide rail (6) at the corresponding positions.

3. The single-column four-spindle box motion mechanism according to claim 2, characterized in that, The octagonal column (1) is divided into inner and outer layers. The outer layer of the octagonal column (1) is connected to the roller guide rail (6) and the damping transmission system (3). The data analysis module (503) is placed in the inner layer of the octagonal column (1).

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