A high-low rail chip removal structure of a double-spindle double-tool rest numerical control lathe

Abstract

The utility model discloses a high low rail chip removal structure of double main shaft double row knife numerical control lathe, including horizontal lathe body, the horizontal lathe body interval is provided with two groups Z axle guide rail mounting seat, and each Z axle guide rail mounting seat interval is installed with high position line rail and low position line rail, and the high position line rail and low position line rail are slidably connected with main shaft mounting seat, and the first main shaft and second main shaft are horizontally installed on two groups main shaft mounting seat respectively, and the opposite one end of two groups Z axle guide rail mounting seat is installed with telescopic shield, and the other end of telescopic shield is fixed in the one side of main shaft mounting seat, and high position line rail and low position line rail are located in telescopic shield. The utility model discloses the step structure of high low rail forms the stable support system similar to triangle, and its bending -resistant, torsional stiffness is enhanced significantly, and telescopic shield is carried on high low rail and forms the big angle slope naturally, and the chip and cutting fluid produced in the processing process can slide down to the chip removal groove along the slope, and the problem of chip accumulation is solved.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a high and low track chip removal structure for a dual-spindle, dual-row CNC lathe. Background Technology

[0002] As the manufacturing industry continues to develop towards higher efficiency and automation, the twin-spindle, twin-row CNC lathe has become the core equipment for machining precision shaft parts because it can complete the dual-head machining of a workpiece on one machine tool, greatly improving machining efficiency and reducing secondary clamping errors.

[0003] Traditional twin-spindle, twin-row CNC lathes typically employ a layout where the spindles follow the same plane, resulting in a relatively high center of gravity. When performing heavy-duty cutting on materials such as cast iron and steel, the powerful cutting force can cause significant torsional loads on the bed. Furthermore, the bed with a same-height linear guide layout has relatively insufficient bending and torsional rigidity, which can easily lead to chatter during machining, thus affecting machining accuracy.

[0004] Furthermore, CNC lathes generate a large amount of chips and cutting fluid during machining. These impurities can easily fall onto the inner side of the linear guide structure and cause damage, necessitating the use of sheet metal covers to protect the linear guides. In horizontal bed structures, the common design of the cover is to install it parallel to the linear guide, which leads to chip accumulation and retention on the sheet metal cover, and cutting fluid can easily leak in, failing to completely solve the problem of impurity intrusion. Although inverted V-shaped sheet metal covers have appeared on the market, guiding the cutting fluid to the chip removal groove through a certain angle of inclination, their small sidewall inclination angle limits their chip guiding effect, and chip accumulation still exists, resulting in unsatisfactory protection. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a high and low track chip removal structure for a dual-spindle, dual-row CNC lathe, thereby solving the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A high-low rail chip removal structure for a dual-spindle, dual-row CNC lathe includes a horizontal bed. Two sets of Z-axis guide rail mounting seats are spaced apart along the length of the horizontal bed. Each set of Z-axis guide rail mounting seats has a high-level linear guide and a low-level linear guide installed spaced apart along the width. The high-level linear guide is higher than the low-level linear guide, forming a stepped structure. A spindle mounting seat is slidably connected to the high-level and low-level linear guides. A first spindle and a second spindle are horizontally mounted on the two sets of spindle mounting seats, respectively. A telescopic cover is installed at one end of each set of Z-axis guide rail mounting seats, and the other end of the telescopic cover is fixed to one side of the spindle mounting seat. The high-level and low-level linear guides are located inside the telescopic cover. A chip removal groove is provided on the horizontal bed near the low-level linear guide. The telescopic cover is inclined downwards along the stepped structure to guide chips and cutting fluid into the chip removal groove.

[0008] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle dual-row CNC lathe, a number of Z-axis guide rail sliders are installed at intervals at the bottom of the spindle mounting base. The Z-axis guide rail sliders are slidably connected to the high-position linear rail and the low-position linear rail respectively, and the spindle mounting base, the high-position linear rail and the low-position linear rail form a stable support system.

[0009] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle, dual-row CNC lathe, the telescopic guard has an inclination angle of 15° to 30°.

[0010] As a preferred embodiment of the high and low track chip removal structure of a dual-spindle dual-row CNC lathe, the axes of the first spindle and the second spindle are located on the same straight line, so that the first spindle and the second spindle can alternately clamp the workpiece.

[0011] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle dual-row CNC lathe, each set of Z-axis guide rail mounting bases is equipped with a Z-axis drive device. The Z-axis drive device includes a Z-axis lead screw rotatably disposed between the high-position linear rail and the low-position linear rail. One end of the Z-axis lead screw is connected to a Z-axis servo motor via a coupling, and a first lead screw slider is connected to the Z-axis lead screw. The first lead screw slider is fixedly connected to the spindle mounting base.

[0012] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle, dual-row CNC lathe, the horizontal bed is also provided with an X-axis guide rail mounting seat. Two sets of X-axis guide rails are installed at intervals on the X-axis guide rail mounting seat. A tool rack mounting seat is slidably connected to each set of X-axis guide rails. A tool rack plate is installed on the tool rack mounting seat. A tool clamp is installed on the tool rack plate. The tool clamp is used to hold the tool. The tool rack plate is located between the first spindle and the second spindle to facilitate workpiece machining.

[0013] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle dual-row CNC lathe, the X-axis guide rail mounting base is also equipped with an X-axis drive device at the position corresponding to the two sets of X-axis guide rails. The X-axis drive device includes an X-axis lead screw rotatably disposed in each set of X-axis guide rails. One end of the X-axis lead screw is connected to an X-axis servo motor via a coupling, and a second lead screw slider is connected to the X-axis lead screw. The second lead screw slider is fixedly connected to the row tool mounting base. Several X-axis guide rail sliders are installed at intervals at the bottom of the row tool mounting base, and the X-axis guide rail sliders are slidably connected to the X-axis guide rails.

[0014] As a preferred embodiment of the high and low rail chip removal structure of a dual-spindle dual-row CNC lathe, the chip removal groove is located between the Z-axis guide rail mounting base and the X-axis guide rail mounting base to facilitate the reception of chips and cutting fluid.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The dual-spindle dual-row CNC lathe of this utility model adopts a high-low rail structure design. The stepped structure of the high-low rail forms a stable support system similar to a triangle. Compared with the planar structure of the horizontal guide rail, its bending and torsional stiffness is significantly enhanced. During the cutting process, the stepped structure can effectively resist the deformation caused by cutting force, workpiece weight and machine tool vibration, and ensure the relative position accuracy of the tool and workpiece. It is especially suitable for processing scenarios that require high load and high stability.

[0017] (2) This utility model adopts a structure design that coordinates the telescopic protective cover with the high and low rails. The telescopic protective cover is mounted on the high and low rails to naturally form a large-angle slope. The chips and cutting fluid generated during the processing will slide down the slope into the chip discharge groove by themselves, which solves the problem of chip accumulation, avoids chip scratching of the rails, reduces the cleaning frequency of the rails, and extends the service life of the rails. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the high and low track chip removal structure of the dual-spindle, dual-row CNC lathe described in this utility model.

[0020] Figure 2 This is a schematic diagram of the relevant structure of the Z-axis guide rail mounting base described in this utility model.

[0021] Figure 3 This is a schematic diagram showing the disassembled structure of the Z-axis guide rail mounting base described in this utility model.

[0022] Figure 4 This is a schematic diagram showing the disassembled structure of the X-axis guide rail mounting base described in this utility model.

[0023] Figure 5 This is a structural schematic diagram of the horizontal bed described in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Horizontal bed; 2. Z-axis guide rail mounting base; 3. High-position linear guide; 4. Low-position linear guide; 5. Spindle mounting base; 6. First spindle; 7. Second spindle; 8. Telescopic guard; 9. Chip removal groove; 10. Z-axis guide rail slider; 11. Z-axis drive unit; 111. Z-axis lead screw; 112. Z-axis servo motor; 113. First lead screw slider; 12. X-axis guide rail mounting base; 13. X-axis guide rail; 14. Tool holder mounting base; 15. Tool holder plate; 16. Tool holder; 17. X-axis drive unit; 171. X-axis lead screw; 172. X-axis servo motor; 173. Second lead screw slider; 18. X-axis guide rail slider. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, this utility model provides a high-low rail chip removal structure for a dual-spindle, dual-row CNC lathe, including a horizontal bed 1. The worktable surface of the horizontal bed 1 is horizontally set, and two sets of Z-axis guide rail mounting seats 2 are spaced apart along its length. Each set of Z-axis guide rail mounting seats 2 is spaced apart along its width with a high-position linear guide 3 and a low-position linear guide 4, wherein the height of the high-position linear guide 3 is set higher than that of the low-position linear guide 4, forming a downwardly inclined stepped structure. At the same time, the high-position linear guide 3 and the low-position linear guide 4 are slidably connected to a spindle mounting seat 5 through a Z-axis guide rail slider 10. The spindle mounting seat 5, the high-position linear guide 3, and the low-position linear guide 4 form a stable support system similar to a triangle. Compared with the planar structure of horizontal guide rails of equal height, the bending and torsional stiffness of this stable support system is significantly enhanced. During the cutting process, the stepped structure of the high and low rails can effectively resist the deformation caused by cutting force, workpiece weight, and machine tool vibration, ensuring the relative positional accuracy of the tool and the workpiece, which is especially suitable for machining scenarios requiring high load and high stability.

[0031] The first spindle 6 and the second spindle 7 are respectively installed on the spindle mounting base 5 of the two sets of Z-axis guide rail mounting bases 2. The first spindle 6 and the second spindle 7 are horizontally distributed. One of the first spindle 6 and the second spindle 7 serves as the main spindle and the other serves as the secondary spindle. The axes of the main spindle and the secondary spindle are located on the same straight line.

[0032] For example, in this embodiment, the first spindle 6 can be used as the main spindle, and the second spindle 7 as the sub-spindle. During operation, the workpiece is first fed into the first spindle 6, which serves as the main spindle, and one end of it is machined. After machining, the second spindle 7, which serves as the sub-spindle, will move to the receiving position to clamp the workpiece and machine the other end. The dual-spindle structure eliminates the steps of disassembly, reversal, and reclamping in the middle, avoids the repeated positioning errors caused by secondary clamping, ensures the coaxiality, perpendicularity, and other geometric tolerances of the machined surfaces at both ends of the workpiece, and significantly shortens the processing cycle, making it especially suitable for mass production.

[0033] For example, in this embodiment, the second spindle 7 can be used as the main spindle and the first spindle 6 as the sub-spindle, which can also achieve the above functions. In specific applications, adjustments can be made according to the actual situation.

[0034] Telescopic guards 8 are installed at opposite ends of the two sets of Z-axis guide rail mounting seats 2. The other ends of the two telescopic guards 8 are fixed to one side of the spindle mounting seat 5. The telescopic guards 8 have a telescopic function and can move and extend with the spindle mounting seat 5. The high-position linear guide 3 and the low-position linear guide 4 are both located inside the telescopic guards 8, which can provide them with protection. Furthermore, a chip removal groove 9 is set near the low-position linear guide 4 on the horizontal bed 1. The telescopic guards 8 are inclined downward along the stepped structure of the high-position linear guide 3 and the low-position linear guide 4 to form a large-angle slope. The chips and cutting fluid generated during the machining process will slide down the slope and fall into the chip removal groove 9, which solves the problem of chip accumulation, avoids chip scratching of the linear guide, reduces the cleaning frequency of the linear guide, and extends the service life of the linear guide.

[0035] Preferably, the tilt angle of the telescopic guard 8 in this embodiment is set to 15° to 30°. The telescopic guard 8 with different tilt angles can be selected according to the installation space of the CNC lathe, as long as the chips can be automatically slid off.

[0036] like Figure 3 As shown, to enable the movement of the first spindle 6 and the second spindle 7, each set of Z-axis guide rail mounting bases 2 is equipped with a Z-axis drive device 11. The Z-axis drive device 11 specifically includes a Z-axis lead screw 111 rotatably disposed between the high-position linear rail 3 and the low-position linear rail 4. One end of the Z-axis lead screw 111 is connected to a Z-axis servo motor 112 via a coupling, and a first lead screw slider 113 is connected to the Z-axis lead screw 111. The first lead screw slider 113 is fixedly connected to the spindle mounting base 5. When the Z-axis servo motor 112 is started, the Z-axis servo motor 112 will drive the Z-axis lead screw 111 to rotate. The first lead screw slider 113 on the Z-axis lead screw 111 converts the rotational kinetic energy into linear motion, thereby driving the spindle mounting base 5 and the first spindle 6 or the second spindle 7 on the spindle mounting base 5 to move along the linear rail.

[0037] Preferably, in this embodiment, the first lead screw slider 113 is cylindrical, and the bottom of the spindle mounting base 5 is provided with a circular clamping block. By fixing the circular clamping block on the first lead screw slider 113, the assembly of the spindle mounting base 5 and the first lead screw slider 113 can be realized.

[0038] like Figure 4As shown, the horizontal bed 1 is also provided with an X-axis guide rail mounting seat 12. Two sets of X-axis guide rails 13 are installed at intervals on the X-axis guide rail mounting seat 12. Each set of X-axis guide rails 13 is slidably connected to a tool rack mounting seat 14 through an X-axis guide rail slider 18. A tool rack plate 15 is installed on the tool rack plate 14. A tool holder 16 is installed on the tool rack plate 15. The tool holder 16 is used to hold the tool. The tool rack plate 15 is located between the first spindle 6 and the second spindle 7. One tool rack plate 15 is close to the first spindle 6, and the other tool rack plate 15 is close to the second spindle 7. When the first spindle 6 or the second spindle 7 holds the workpiece, the first spindle 6 or the second spindle 7 can move to the nearby tool rack plate 15 to process the workpiece.

[0039] Preferably, the X-axis guide rail mounting base 12 is also equipped with an X-axis drive device 17 corresponding to the positions of the two sets of X-axis guide rails 13. The X-axis drive device 17 specifically includes an X-axis lead screw 171 rotatably disposed in each set of X-axis guide rails 13. One end of the X-axis lead screw 171 is connected to an X-axis servo motor 172 through a coupling, and a second lead screw slider 173 is connected to the X-axis lead screw 171. The second lead screw slider 173 is fixedly connected to the tool mounting base 14. When the X-axis servo motor 172 is started, the X-axis servo motor 172 will drive the X-axis lead screw 171 to rotate. The second lead screw slider 173 on the X-axis lead screw 171 converts the rotational kinetic energy into linear motion, thereby driving the tool mounting base 14 and the tools on the tool mounting base 14 to move along the X-axis guide rail 13. Since the tool plate 15 can hold a variety of tools, this embodiment can move different tools to the workpiece for processing according to the processing requirements.

[0040] Similarly, the assembly method of the tool holder 14 and the second lead screw slider 173 in this embodiment is the same as the assembly method of the spindle holder 5 and the first lead screw slider 113, and will not be described again here.

[0041] like Figure 5 As shown, the chip removal groove 9 in this embodiment is located between the Z-axis guide rail mounting base 2 and the X-axis guide rail mounting base 12. When the workpiece on the first spindle 6 or the second spindle 7 is processed with the tool on the tool rack 15, most of the chips and cutting fluid will fall directly into the chip removal groove 9. A small portion of the chips and cutting fluid that splash onto the telescopic protective cover 8 will also automatically slide down the slope into the chip removal groove 9.

[0042] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A high and low track chip removal structure for a dual-spindle, dual-row CNC lathe, characterized in that, The system includes a horizontal bed (1), which has two sets of Z-axis guide rail mounting seats (2) spaced apart along its length. Each set of Z-axis guide rail mounting seats (2) has a high-position linear guide (3) and a low-position linear guide (4) spaced apart along its width. The high-position linear guide (3) is higher than the low-position linear guide (4), forming a stepped structure. A spindle mounting seat (5) is slidably connected to the high-position linear guide (3) and the low-position linear guide (4). A first spindle (6) is horizontally mounted on each of the two sets of spindle mounting seats (5). The second spindle (7) has a telescopic cover (8) installed at one end of the two sets of Z-axis guide rail mounting seats (2) facing each other. The other end of the telescopic cover (8) is fixed to one side of the spindle mounting seat (5). The high-position linear guide (3) and the low-position linear guide (4) are located inside the telescopic cover (8). The horizontal bed (1) is provided with a chip removal groove (9) near the low-position linear guide (4). The telescopic cover (8) is inclined downward along the stepped structure to guide the chips and cutting fluid into the chip removal groove (9).

2. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 1, characterized in that, The bottom of the spindle mounting base (5) is equipped with several Z-axis guide rail sliders (10) at intervals. The Z-axis guide rail sliders (10) are slidably connected to the high-position linear rail (3) and the low-position linear rail (4) respectively. The spindle mounting base (5) forms a stable support system with the high-position linear rail (3) and the low-position linear rail (4).

3. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 2, characterized in that, The tilt angle of the telescopic protective cover (8) is 15° to 30°.

4. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 1, characterized in that, The first spindle (6) and the second spindle (7) are located on the same straight line so that the first spindle (6) and the second spindle (7) can alternately clamp the workpiece.

5. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 1, characterized in that, Each Z-axis guide rail mounting base (2) is equipped with a Z-axis drive device (11). The Z-axis drive device (11) includes a Z-axis lead screw (111) rotatably disposed between the high-position linear rail (3) and the low-position linear rail (4). One end of the Z-axis lead screw (111) is connected to a Z-axis servo motor (112) via a coupling. A first lead screw slider (113) is connected to the Z-axis lead screw (111). The first lead screw slider (113) is fixedly connected to the spindle mounting base (5).

6. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 1, characterized in that, The horizontal bed (1) is also provided with an X-axis guide rail mounting seat (12). Two sets of X-axis guide rails (13) are installed at intervals on the X-axis guide rail mounting seat (12). A tool rack mounting seat (14) is slidably connected to each set of X-axis guide rails (13). A tool rack plate (15) is installed on the tool rack plate (14). A tool clamp (16) is installed on the tool rack plate (15). The tool clamp (16) is used to hold the tool. The tool rack plate (15) is located between the first spindle (6) and the second spindle (7) to facilitate workpiece processing.

7. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 6, characterized in that, The X-axis guide rail mounting base (12) is also equipped with an X-axis drive device (17) at the position corresponding to the two sets of X-axis guide rails (13). The X-axis drive device (17) includes an X-axis lead screw (171) rotatably disposed in each set of X-axis guide rails (13). One end of the X-axis lead screw (171) is connected to an X-axis servo motor (172) through a coupling. A second lead screw slider (173) is connected to the X-axis lead screw (171). The second lead screw slider (173) is fixedly connected to the tool mounting base (14). Several X-axis guide rail sliders (18) are installed at intervals at the bottom of the tool mounting base (14). The X-axis guide rail sliders (18) are slidably connected to the X-axis guide rails (13).

8. The high and low track chip removal structure of the dual-spindle, dual-row CNC lathe according to claim 6, characterized in that, The chip removal groove (9) is located between the Z-axis guide rail mounting base (2) and the X-axis guide rail mounting base (12) to facilitate the receipt of chips and cutting fluid.

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